Actually, random thought. What if that's when Mike's senses start to kick in, maybe even without him noticing. He gets so frustrated about whatever Stick's trying to make him do that he can't, than he starts raging, yelling, screaming crying, whatever, and in his rage, he actually attacks Stick. Stick pretty quickly subdues him, but when he has he points out that Mike was putting up a decent fight, plus managing to block him. When Mike's calmed down, Stick has him try whatever they were doing again, and he can do it.

Also, I was thinking Stick should be a bit nice to him sometimes. Like that time for example. In this kind of gruff way that's actually not that nice. He gets that Mike's scared and angry, but it's working. Maybe tells him he's proud of him or something...