I'm a little confused at the take of some. The goalie acted with the current rules as he is aware of them and that would award a penalty shot if the goal was intentionally removed to nullify a chance. I'm not aware under current rules that a goal would be awarded for that.
So the goalies action in effect had the assigned justice meted out. He made a deliberate evaluation, decided on the consequence, and people are saying his act is despicable, against hockey honor, etc.
It was an intelligent in the moment act I applaud the goalie for to think that fast and/or to have evaluated in his mind what he would do in such a circumstance. To me that's a Ken Dryden type thinking goalie moment.
People seem to want to punish the goalie in ways not currently subscribed just because he did this and took the consequence that is subscribed.
The fault is not with the goalie, its arguably with the rules if people think they should be changed.
I do agree a precedent like this will make goalies think. One of the things we will no doubt see is an NHL goalie inadvertently knocking the goal off on a shootout attempt if he doesn't like the way one attempt is going or buying time to better prepare by delaying in such a way. We've already had very suspicious "equipment repairs" on an ongoing basis buying goalies time.
My own approach is somewhat different. Shootout is a stressful even for all involved. people should have some moments to prepare. Doesn't need to be rushed. Builds the drama anyway.