So now it's about mental health, and about race. I'd probably wig out if I was being fired for an affair, and stood to lose $5.5 million a year, and my family. If a pregnancy resulted from his affair as has been rumored, that probably had him on edge, particularly if he - as rumored - forced the girlfriend to have an abortion.
None of that is what I consider a "mental health issue", beyond suffering the consequences of moral failings and really stupid choices.
Back to the race issue, that he has a responsibility to his race to have been better. He's an individual, making individual choices. I'll never subscribe to that. He has a responsibility to his wife, his family, his employer, his coworkers and team. His assistants are late in the hiring cycle to be looking for landing spots, and if Michigan brings in or elevates someone who preserves much of the current staff, they won't have as much autonomy as a new coach might. See auburn.