well, first of all, in ccc 10.2 the color settings where you described does NOT have saturation. there is a saturation setting under "avivo video", which was set to 110. but while i was playing around with the advanced color settings i decided to reset all to factory defaults... bingo!
i still have no idea which setting was out of whack (nor what caused it in the first place), but obviously something was.
thanks for looking and i hope this helps someone else who is as lost as i was.