Fan Interference with Breakway Layup

[Oz Referee]

I have a problem with both giving the basket, and calling a T for several reasons:

1. The player might have missed the basket. (Or the shot clock expired, or an off the ball foul, or a myriad of other possibilites).

2. Can you guarentee that the spectator was supporting Team B? Here are some other possibilities:
i) Has personal grudge against that player
ii) Was drunk/high/just not-quite right in the head
iii) Doesn't follow Team B, but supports Team C which needs Team A to lose to make the finals.
iv) Supports Team A and hopes that the refs will grant the basket/call a T.

IMHO I believe the only action that could be taken, within the rules, is to stop play, reset the shot clock and grant a throw in to Team A. At this point it would probably be a good idea to explain your ruling to both coaches. Have the spectator removed, eithered by court management, or by security/police.