limiter

On the way to work today, I had a bit of an issue that has me running through possible culprits in my head: The bike was at about 5 bars on the temp gauge. Going down a hill in 4th. RPM was about 9K. I had the gas pinned, and the bike was still accelerating, then randomly it bounced off the rev...

Has anyone experienced this? At the last couple of race days when Ive changed down an extra gear to normal and hit the limiter, twice the engine has completely died. Once I turn the ignition off, then back on it starts again. I have been told that if you hit the rev limiter for longer than 3...