Actually, with the statistical survival rate of Wreckers, I have no problem with this proposal.
I completely agree - that was the one thing that stood out as unexplained in the miniseries. I suppose he was 'only' ripped in half at the waist and then whacked into Kup's head, but it felt like it Guzzle's survival deserved at least a line of exposition. That said, maybe it was meant to render ironic Overlord's line "you didn't expect this stunted little wretch to survive, did you?"
The other thing that didn't make much sense was that they made a plot point of Impactor losing his right hand and Ironfist replacing it with a harpoon... but Impactor still had a harpoon in all the flashbacks.