It doesn't matter how good of a DRG you are.

[BristolRuss]

but seen a main drg yesterday in a T9 trainingsgroup that WALKED from DPS gatherpoint to Nael when heavensfall came down.... I was about to cry (JUMP BOY JUMP ;_; )

Heavy Thrust had most likely worn off by that point. They probably wanted to reapply it before performing any jumps as it's a DPS loss otherwise. I don't know how far away the main group stacks from the tank in your team, but it mine it's not far at all. It takes less than a second to run to Nael from the stack point. It makes much more sense to run to Nael, apply HT, and then go through your rotation and jumps rather than use an unbuffed Spineshatter Dive to save less than a second of walking.