Had this play on Friday

[ChickenOfNC]

I was LJ. Receiver on my sideline gets jammed by the corner who's playing him tight. Rides him out of bounds. It was clean (no holding, etc.) The receiver gets back inbounds quickly and as soon as he establishes himself inbounds, the ball hits him in the hands. He catches and steps right back out of bounds. I rule a catch (player was forced OOB and returned at first opportunity)

All this happened pretty quick, so the thought in my head was whether the ball was in the air while the corner was still contacting the WR (possible DPI)

Obviously, I'm not looking back at the QB, so I can't tell. Would this be for the BJ to help out on?