Iguodala blocks his own dunk

[comical]

In the USA-Argentina game yesterday, a dunk by Iguodala was disallowed because the ball hit him on the way down and went back up through the basket. In the unlikely event a play like this occurs when I'm working at the table (I'm one of the handful of posters here that keep the book; I work at a Division III school) is it likely to be verbal communication with one or more of the officials that explained what happened? Should I look for a "no basket" signal? Any other thoughts about how this is handled?

Here's a link to a site with a video of the dunk. Thanks in advance. Sorry if this was mentioned in another thread, but I haven't seen it.

Andre Iguodala Blocks His Own Dunk - From Our Editors - SBNation.com