Positioning question

[theboys]

This isn't a complaint...really...just a question. And, forgive me, I don't know how the rotation works for three man, and don't know the terminology, so overlook my errors there, if you would.

For purposes of this question, assume I'm standing behind the scorer's table. The trail (?) is administering a throw-in at A's defensive endline after the ball goes out of bounds. The ref is on the far side of the lefthand basket. The ball is inbounded by A1 to the far side of the court, and the inbounder clears out. The person who receives the pass, A2, makes it about halfway to the midcourt line, when the ball is stolen by B1. B1 makes a beeline for the basket, with A2 keeping stride. B1 jumps to shoot, and A2 hits...well, it doesn't matter what, because that leads to my question.

The former trail (who is now the lead?) ends up on the endline, behind the two players (i.e., the players are between the basket and the ref). When B1 jumps and A2 tries to stop B1, any contact made or not made would be hard to spot from the ref's vantage point.

I'm just curious, I guess. Do you have a "rule" or standard you follow in positioning in such a case? With things happening so quickly, I'm sure its hard to always be in the right spot. I guess, it seems like the official should try to maneuver, if possible, to be on the opposite side of the basket as A2/B1 in such a case.