PC or Not?

[WyMike]

Alright, I'm thinking the spirit of 'displacement' isn't intended for a player going to the floor after incidental contact whether in LGP or not.

This weekend I had A1 with the ball and B1 had LGP very tight to A1. A1 drops his left foot back and cross over dribbles to the left of B1. B1 catches an elbow to the chin and drops not from displacement, but 'cuz it looked like he bit his tongue and it hurt really bad.

A1, B1 and I were all alone out in the middle of the floor, I ruled it as incidental contact, the play went on and not a coach or parent hollered about it.

In the sitch which started this thread, if A bonked heads with B in a normal movement and B goes straight down without displacement, I got nothing. If he swings his head around like an overly aggressive elbowing move and knocks B out of place, I have a PC.

Am I too far off here?