Okay first, that was a HUGE SPOILER...
Regarding this revalation, it's unbelieveable. Legacy takes place 100 years after the OT. So that's 120 after ROTS (approx). Hett was at least 25 during ROTS, so that would make him 145 years old at the time of his revalation. I don't think Tusken's live that long, and certainly not humans. Even being force imbued, Luke didn't last that long, and we all know the Dark side eats away like a cancer. So I can't see Hett being Krayt. Really disappointing knowing this now. And here I was all set to collect figs from that series. I am seriously reconsidering that now. Way to go Dark Horse. Muck up an otherwise good story line.