Oh yeah, he knows all too well the signs of someone at the end of their proverbial tether, he's seen it in three Raphaels by this point, but it's only now that he realizes what side of that tether he's on.

Normally Mike doesn't find himself in the cross-hairs, and on the rare occasion that he does, he can talk himself to safety.

Nine times out of ten, that is.
There was that one time, where Mike pushed Raph too far, and nearly paid for it with his life. One bit of smack talk too much and a blur rage armed with a pipe wrench was upon him.

It wasn't until that day Mike realized just how dangerous being Leo could be, and respected how strong Leo habitually was in the face of their brother's anger.

Once you're in the crosshairs of an Angry Raph being Mike won't save you. Only being Leo will. And so...Mike does his best to be just that.

"You don't owe me anything, but if you help I'd owe you," he says levelly, holding his ground. "Your call."