It's for the best that Raph isn't looking directly at him, because this means Mike can roll his eyes without fear of being smacked upside the head.

"Sooooo, you're no good to me as backup with a busted paw. I don't just take point for anyone, I'll have you know."

Because this isn't Mike being altruistic, it's Mike covering his own ass. So stop acting like you're twelve, Raph, and get with the program.