In fairness, I don't think he expected him to shoot from the logo. And the one thing you really don't want to do is foul. I'm not sure getting a hand up would have made much difference from that distance.
I don't know, it seems that if a team is launching a 35 footer to win the game, that's a pretty low percentage shot already. Take your chances with that instead of risking a foul.
Obviously Evans could have played it better but it was less of a mistake than leaving Jenkins, or not guarding the inbounds pass on a full court heave