I've noticed this as well and find it quite bizzare of someone of Almagro's level.
any other examples?
It is possible that he needs a bit of anger to maintain focus. remember the famous youzhny head smash. after mugro checked to see if he was ok and laughed at him, his level dropped and he lost the final set from a break up.
but then what misha did would be enough to make anyone lose their focus.