I personally do think Mings deliberately tried to stamp on Zlatan. The way his foot was coming down wasn't a natural movement to me.
That said, I'd want to stamp on the big nosed twats head as well, so can't really blame him.
I also think we'd have been better off against Zlatan. Good though he is, his lack of pace makes him less of a threat. I think a combination of Rashford/Martial might cause us more problems.