What you saw there was Dion Waiters committing not one, but two violations on the inbounds pass. Delivering a forearm to Ginobili’s chest was the first, and leaving his feet to deliver the pass was the second.
The first violation is what drew the most attention, and crew chief Ken Mauer admitted afterward that Waiters should have been whistled for the offensive foul, which would have meant that possession would go to the Spurs.
This doesn’t matter much in the grand scheme of things, mainly because the Spurs came away with possession anyway, and couldn’t convert in the chaos of the game’s closing seconds. But it was such a strange play that it warranted a clarification nonetheless.