I've seen him do things like mentioning it as being among his better films and pausing for laughter.
During an interview on the special features for
Sundown: The Vampire in Retreat, he mentions that around the time of the filming, he'd been making plans for
Screaming Brain. He says something to the effect of "So that tells you how many years of my life I put into that damned thing."
Anyway, I didn't get a chance to watch it tonight, but maybe tomorrow.