Is that him! Although he played a tiny part in that film his character is one of the first who pops into my head whenever I think of Capricorn One. He was great at barking at people, like he does with the Dude in the Big Lebowski.
He'll always be Santa Claus to me too. The best depiction of Santa in movie history for me! Will need to find a copy of Santa Claus The Movie and watch it this weekend.
Sad news, but a man with a distinguished career and tremendous presence.