Clearly this other instructor is not doing this student any favors. I knew of a few instructors who would go out and show their students barrel rolls and loops in 152s and 172RGs. They had to prove they were hot stuff. Now, these aircraft lost their airworthiness certificates due to structural cracks in the forward and aft bulkheads. Show the student what he is supposed to be doing. Maybe even go over the five hazardous attitudes and their antidotes.

That is more than likely the case. To give you an idea, while maintaining a constant altitude, a 60 degree bank will generate 2g's, 70 degrees = 3Gs, 80 degrees = 5.76 Gs. The normal category tops out at 3.8 and utility 4.4 if I remember correctly.