What do you mean by "dead hand" in this context? Is it like a "death grip", perhaps?But it's a grappling that is alive and flowing by utilizing what we refer to as CONTACT CONTROL, and not actual dead hand fully committed grappling.
I read the HFY108 thread you quoted, there was some good though, not revolutionary or revelatory, thoughts presented there, but it didn't explain the distinction you make here.
I wouldn't describe wrestlers as necessarily having "dead hands", myself. And I've met no decent ones that aren't VERY "alive and flowing".