OP , you mean that you seen him in class and had every chance to ask him yourself but yet you come to VN for an answer that more than likely won't be the right answer.
I have already said that I sat in the balcony, and he sat on the ground level. I guess I will take time on Monday to disrupt the class and yell down from above just to satisfy Volnation. I also have a class 15 minutes after the one I have with him, so I do not have time to wait around to ask about his arm.