***“Grotesque” or “Confused”?*** A Los Angeles girl and her friend (Linda Blair & Donna Wilkes) travel to Big Bear Lake to relax at the remote abode of the former’s parents. Her father is a renowned horror effects artist (Guy Stockwell) and her plastic surgeon uncle is also coming out (Tab Hunter). Unfortunately, a curious group of malevolent punks is on the loose and puts the kibosh on the get-together, but the family has a secret. “Grotesque” (1988) takes the cabin-in-the-woods slasher plot and mixes-in some “The Goonies” (1985) crossed with the cartoonish villains of the Mad Max trilogy.…