Tough Situation #1

[pauli]

High level boys varsity game. I am lead table side (2-person mechanics). A1 beats his defender, B1, baseline. Gym is small and there is little room behind the baskets to drop back into. As I look to see if A1 steps out of bounds and if B1 might hold A1, B2 drops off his post match-up to block the endline. Because I am looking at the possible OOB or B1 hold, I dont get a good look to "referee the defense" B2 to see if he gets there in time. Collision, A1 winds up on the floor while B2 is standing with both feet in bounds. Difficult to see the entire play and trail was of no help. What would you do? Give up the possible OOB to get the block/charge? Stay with A1 and B1 and not get a great look at B2?