No, he made the right call, Porzingis's shot was off and Lopez was playing really well. Thomas had a very good effort.
What I want to see is more of the offense the team ran in the 2nd half, which was to abandon the read/react part of the Triangle, and instead form the sideline Tri by overloading one side with 3 guys and then going to work with the ball on the weak side with 2 man games. You can run screen/rolls, you can give and goes, you can run post entry and cuts, you can run screen/pops. Lots of different options that are far easier for these guys to grasp than the Triangle.
If we run the offense the way we did in the 2nd half, Porzingis will get many open looks and good looks within the offense. We went away from trying to run the Triangle, and instead went to using Triangle spacing to get guys good 2 man games going on the weakside. Was very impressive how good the team is at that way of playing, May just be the team needs to scrap trying to run the Triangle because they clearly don't get it beyond the basics.