Apologies, 36 of 86 the Spurs shot in Game 4. So, 8 made FG's in the 2nd half, not 11.
The Spurs were 28-47 shooting from the floor in the first half of Game 4. By game's end, they were 39 of 84. 11 made FG's in the 2nd half, doesn't even seem plausible.