With Vermont, the only thing I can speculate looking at their roster & stats from that year, is that he felt he had played his way into being the full-time starter, and Sneddon didn't agree since he had Lekkas coming in. It seems plausible to me that he jumped to Denver figuring that Jaillet would sign after this past year, and then he'd be the experienced goalie on a loaded team with 3 years of eligibility left. Since Jaillet didn't leave the pros, Munson had to jump again to try and get ice time.
Regardless, you're right to say that he's now looking at a very similar situation at Tech with a lauded freshman coming in, so the pressure is on for him. Especially since he hasn't played in a game in over a year.