Interest play in Rec Ball

[IREFU2]

I had something crazy happen last night in a rec ball game. As I was coming into the front court becoming the new lead, I stopped short of the inline. The offensive player ran into me and fell down as he was being passed the ball which caused it to go out of bounds. I gave the ball back to the offense since I cause the him the fall. I was out of position and my partner went with the call, but told me at halftime I shouldnt have done it. The game was neck and neck and my doing that made no difference in the outcome of the game. Comments???