Tommy Tremble was one of the most unselfish guys you could ever find on the team.
Even though Mike Mayer was TE1, and a very good blocker, Tremble was better than Mayer was at run blocking.
Having him there as a blocker was like having another full fledged lineman helping you out, but with very good speed. There were many times he'd intercept an attacking linebacker or even safety, since his own speed and mobility is that good.
If anything, he played a lot of H-back.
The pro teams took note of this, since most pro-style offenses make good use out of TE's who operate as H-backs.
I doubt Tommy Tremble regrets his decisions, since he recently signed a 2 year contract worth $16 million with the Panthers.