They did actually do this and the officials no called it. Mainly because they weren't sure whether it was a violation or not. It was in an almost 40 pt game so it didn't matter one way or the other.

Plus I happened to find a Case situation: 4.15.4 Situation C. Difference in the situation is that in ruling C they say A1 throws the ball against his/her own backboard in an attempt to score (try), catches the rebound and dribbles again. Ruling: Legal. Once ball release on try there is no player or team control.

This makes it seem that we should consider every time the ball is bounced off the players own backboard as a try. Interesting.