Hello, Tatia,
I thought Culp looked quite dashing in XTRO-3; he does military so well!
And, I loved his role in Santa's Slay. That was a great flick!! I really enjoyed it. I have not yet seen "Silent/Deadly Night 3"--but you do make it sound intriguing with brains held in by a bowl (huh, original if nothing else!).
Perhaps Mr. Beardface can fill us in on Culp's connection or lack thereof to this "Growth" movie? It does sound like he was associated with it and now is not. As you said, the striking lack of his name on the promo card is suspicious.
Mona