Yeah, I would try bleeding it again and see what happens. One thing to try is after it starts acting up ride it right home and bleed it. What you might notice is that if there is air in the line, when you crack open the banjo without pumping the clutch, it will spurt out due to the increased pressure from the expanded gas. That's what I found at least. But do make sure you check the plates as well, although it has been my experience that the plates get "grabbier" at higher temps, and that if it were the plates going bad then you would see slipping at cold temps and it would go away as the plates heated up from use.

Honestly, it sounds like you have air in the line. It might be due to a bad MC, but it could also just be that the bleeding didn't get all the air out. I've found that these hydraulic lines can be a pain in the ass to get all the air out and that even the best attempts can leave a tiny bubble in the line. But try bleeding it a couple more times and see if it goes away, check the plates, and if you're still having the problem it might very well be a bad MC. The guy who explained the problem to me said it happened all the time to racers he worked with and that it can happen much easier than you think. One last question, when you low sided, did you notice any clutch fluid on the inside of your fairing around where the slave cylinder? I remember seeing some after my low side and didn't really pay much attention to it at the time. Later I realized that the clutch lever had been pushed so hard that it forced fluid around the seals in the slave cylinder and onto the fairing. Kind of an aside, but I'm curious. Anyways, hope this helps.