Read an article on ESPN today that lot more teams will have cap space next season, as bad contracts from the 2016 spending frenzy come off books, and it will be a much better market for FAs. Given that, it might make sense for Temple to pick his option for next season.
I personally would love for him to opt in. To begin with, I'm really scared that the front office will be tempted to spend the money it gains from the opt out to make some splash, when I want them to evaluate what we have (maybe I'm wrong there, but that's just my opinion). I also think he has value, both on and off the court. Finally, as an expiring vet, who is a solid contributor, and is on a reasonable salary, he will have value at the trade deadline.