I'm not sure what state this as in, but if a coach pulls the team off the floor here, I believe the MHSAA will make the AD and/or coach appear to explain why they don't deserve additional punishment (i.e. suspension, etc.).
I actually saw this happen in a semi-pro women's regional championship game. Visiting team doesn't like the ofifciating calls, so partly through the second half after the home coach gets two Ts and an early dismissal, he tells his team to leave with him, and they did. I couldn't believe it.
Sad part was that before his meltdown, his team had cut their deficit down to about 8-10 points and had plenty of time to make a comeback attempt.