I think the thing with being a motorcyclist.
I'm not saying I'm the oracle of road safety and motorcycle guru, I have been now riding 20 years and still alive says something I guess.....
I don't ride slow either, I'd say I'm above average, although I'm no street Rossi, I certainly cannot take corners as well as some.
Anyway, point I'm getting to, is I don't often have near misses, really ever. I think if you are riding a motorcycle and are having near misses, or things that could have been near misses, and often, you probably shouldn't be riding.
This isn't directed at the OP necessarily either, I don't know this could have been the first thing in 20 years or whatever then fair enough.
I'd say it was **** poor planning to go round a corner like that, with a car close behind, you've ended up putting yourself in a pressure situation. The best thing to do with the car behind your ass around that corner would have been to take it more slowly, you'd have given yourself way more time to anticipate the danger on the exit, and despite the car being right up your backside, I'd rather both vehicles be moving at 30 than 60, as the vehicle in front you were controlling the speed.