Finally cured this and I am Bummed I never took the time t dig into it.  It appears to relate to modified throttle maps, specifically max desired plate angle, I had made mine capable of 100% just out of idle, about 950 rpm, this is not the way to do it.

Basically it allows the ecu to over shoot its attempts to idle smooth, when the car has been ran hard and then you let off it has to come to a close and then bounce back open for a second to maintain idle, with the map edited too aggressively it will re-open way too far.  This then spikes the maf readings to way high for idle, adds to much fuel and snaps the throttle back shut abruptly and stalls the engine.

I simply made the map stock to 2500 rpm and then allow 100 after that, no more idle bouncing, no more issues.