I don't know about what caused his break. If you did something dumb and broke your arm, couldn't you come up with a better excuse. I think is might be true just because it would make such a silly lie. The truth can be stranger than fiction. If he was doing a serious, high intensity workout and it broke, what would the sounded like? Gives me the keeps.
I collect Earvin "Magic" Johnson cards, the more goatee and short shorts, the better. The 80's PG not the 1996 PF. Check out my sports card albums at https://sportscardalbum.com/u/borisbadinov