Wow, why did you post this example of such aweful driving? Are you actually proud of these enough to stick them on youtube for the world to see how dangerous you are? (I watched your WPB and Sebring vids...I didn't want to waste anymore time with your other one) Loren was correct, tune the driver first. Here is a tip...the shifter isn't going to run away if you take your hand off it. The only time your hand should be on the shifter is when you are SHIFTING! It's going to be in the same place, right where you left it, EVERYTIME!! Why are you going through the twisty bits at Sebring one handed?? You need to follow some basic FUNDAMENTALS OF DRIVING!!!
As for testing your mods on the damp track as you say you were, bullshit. You were loosing control plain and simple. You were beyond your limits and not your cars. If you were 'testing' as you put it, you would have anticipated what the car would do and have been alot smoother. I'm suprised your rider didn't crap his pants with you.
Do us all a favor and stay off the track or warn us all when you will be near one again.