That Don Jonas story... I lived through that era & I don't remember that. Don threw a lot of interceptions to TD's. About 50/50 as he was a risk taker & a gunslinger. But so did a lot of qbs back then. Lancaster was another one who threw a lot of picks so would Jonas have lost his mind in anger? I think, from what I remember that Jonas was a cool cat. Not a lot bothered him on the field & he was always calm when he played. But wearing his jersey backwards?
The refs would have told him to put it on the right way or be penalized. The dress code was a lot stricter back then. Look at the old pics of players right into the 90's. No bare skin anywhere except for the arms & forearms. That is unlike today. For example, a players shin had to be covered or there was a penalty on the field & a fine to the offending player. Today, we see players do that all the time with no consequences. Bare arms that show a player's delts & bare shins.
I'm thinking as that was 50 years ago perhaps maybe it was a torn jersey he wore or one with another number. Then again, if that is a sweet Bomber memory for you & even if it did or didn't happen but you remember it that way then I'm fine with it.