First THANKS for posting this.
I just had this happen to me on 95 north of Baltimore. I swear it was a 4 inch cliff between lanes all of a sudden. I admit i freaked out seeing that and the sign saying the lanes were merging. Just getting back into riding after 25+ years off the bike i had NO clue what to do so i starting slowing and moving right (onto the shoulder side of the lane away from the cliff). I ended up and the end of the 2 lane section and found that they had a section where instead of narrowing on the convergence they had a section at a right angle to the path of travel. Big thump, even at slower speed, but no crash for me (thank you Lord).
Are you saying you can ride up that cliff of asphalt?
I'm saying you can and there may well be a time when you HAVE to; forced into it, avoiding something, whatever.
If at all possible, safely, to avoid as you did, that's great. I do NOT want anyone going out and trying this for fun and end up getting hurt. This thread is intended solely as a resource of 'it's probably gonna confront you sooner or later' and HOW to deal with it, based on my experience, the training others have given me, to maybe help someone manage it and improve their skills.
There's gonna be an unsettling of the bike in this circumstance and anything similar to it; hitting an animal, debris, potholes, and drive from the rear is what stabilizes a motorcycle, working with rake, trail and the suspension. Cutting throttle, applying brakes, in an unsettled circumstance, tends to exacerbate the instability. It is my view that most of the time riders freak, stare at the obstacle, chop throttle, hit the breaks, and the whole thing cascades, RIGHT NOW, into a crash.
The sudden unsettling tends to make us snap our attention and eyes to the problem instead of focusing on where we wanna go, making the situation even more tenuous. We KNOW we need to look where we wanna go and we know, or should, what we need to do, input wise, and not do, to help make that happen; usually, throttle. Smooth or maybe even a blip of power.
There simply is no way to get better at this than to do it. I try to work at it, when possible, with no traffic. However, that ain't how life works. Yesterday, I was following a pick up up the hill, the section I've been referring to in this thread. It goes from one lane to two, ridden it a billion times, could see where the second lane had a higher layer on it from the night before but I wanted to get around truck so, I pointed and shot and hit it, wanting to carry momentum up and over with solid acceleration, knowing it was gonna be a fairly big hit and, sure enough, unsettled, lost some direction because I hit it a bit 'shallow' as opposed to trying to by a bit more angle but kept on the throttle, nice and steady and instantly started to settle when Captain Pick Up decides he, too, wants to move over RIGHT NOW. I could feel him make up his mind and so just go, commit, not paying ANY attention to me and I'd been following him long enough he knew I was right there. He didn't catch himself, he didn't give me space, he just kept coming and I was right along side his bed, right in the middle of getting re settled. Had I hit the brakes or chopped I might have been in some trouble but, I took it as it was (that's key to me, ride what is) and there was room to settle, give him a very loud "MOTHERFUCKER" and when he waved 'sorry' I shot him my biggest and best bird. I was furious.
In any event, I never stopped riding the bike and didn't flip him until I was settle back behind him. had he shown the slightest remorse or 'oops' that's one thing. Shit happens but I saw him in his mirror looking at me when he came over and he simply had made his mind up and wasn't going to do anything but keep coming. He scope locked. He did what riders do when we fuck up.
So, all in all, it was good practice and could have gotten real bad real quick had this been my first time and not ready for it. That said, had this been new to me or had I been leading anyone, I would not have gone around him. I just wanted to practice in traffic.
It's gonna scare the hell out of you but you, as a rider, can not afford a poor reaction. Ride it out. Eye's, good inputs, most likely throttle, resist the urge to chop and break as that only makes the bike even less stable. You need corrective force and we get that from the rear tire, pushing forward, making rake and trail do there thing.
Shopping carts are actually a decent analogy. You get a wobbly one that wants to go all over the place, push harder and it settles some.
They have rake and trail on those front wheels and they need propulsion from the year and it makes them steady out.
So, get you a cart and run out on 95 and practice with that SOB before you try it on your bike! JUST KIDDING!!! LOL (it does help with the visual of what you're trying to do, though...stop pushing the cart over an obstacle and it goes off course or tips over, push hard and it unsettles then settles and on you go!)