WTF? I've never seen that before in my life, that looks scary as hell. It also looks by the spread that it's rebound based, my guess is you're cranking the bike way over on semi-track tires and then you're getting a rebound bounce that's unloading the tire a little and causing it to slip and catch.
Scary.
It looks scary but doesn't feel scary... but this was scary... my RS3 Rennsport cold tire slide on the perverted pavement...
