I have always heard coaches tell their players to "square up" or at least their shoulders to the basket when shooting. Waterman does neither in his FT or 3 pt shooting. I also wonder why when there are so many coaches that a flaw is not corrected. You can shoot 1000 times incorrectly and it's not going to get better. If its only confidence, I would say yes, keep shooting if everything else is correct.
The other thing that might be more likely is that with Pryor going down, he's the most likely choice (same height and body type) that has to replace him. If he keeps trying to be that guy, hes not going to succeed. If he works on defending, getting rebounds, and not settling for every open 3, I think the game will get easier for him. Kudos to Coach Kelsey for not putting him back into the game after showing clear frustration after missing those foul shots. It was evident then that the missed shots were in his head. It will be interesting to see if he continues to start. Unfortunately UK doesn't start a player under 6'4" which will be a challenge for Reyne both on offense and defense.