How would you handle this?

[Ref in PA]

In last night's Boys varsity game, A1 is shooting a 3pt shot from the corner. B1 coming out strong from the lane area. Rather than contest the shot, B1 bends his body and fakes an undercut move while A1 is airborn. No contact is made. 2 or 3 minutes later, the play is repeated.

Should this be ignored? Should something be said to the coach or player?

The game to this point had be physical, but not out of hand due to the game management of the officials.