I boiled my oem clutch fluid on my 1st track day last month (pedal sticks to floor and eventually becomes unuseable, pedal travel is really reduced prior to this tho) so it doesnt sound like you have that issue. I immediately ordered some motul 600 and ran with that in there this last weekend. No issues whatsoever now on that front. The CSC issue sounds likely. Looks like we both developed issues over the weekend. Im getting grinding noises that i can also feel though the seat under hard cornering now...
Good luck man, keep us posted.
Edit: not to hijack you thread at all but if anyone has any ideas about mine id appreciate any input you have. To describe it more fully: Like I said, its a grinding feeling that i can also hear, about 10 minutes of lapping and it will go away until the next session. It initially only happened under extremely loaded cornering when i got on the power but developed to the point i could feel it for several seconds dollowing the corner after i had straighted out. I felt it on the freeway yesterday when i accellerated and hit a bump/depression in the road. Sounds/feels like metal on metal grinding, not screeching tho. Doesnt occur when both drive wheels spin from acceleration in a straight line or though a turn. I smacked my left rear tire into a curb pretty good a little while back and had to replace some of the suspension pieces on that corner. Thinking its possible that these are related, the sound does seem to be coming from that area but its hard to tell.