The UFC said the accident happened Friday. Means (18-3-1) was slated to fight UFC newcomer Abel (Killa) Trujillo (9-4).
The six-foot-two Means was doubtless cutting weight in the sauna, facing a 156-pound limit at Friday afternoon's weigh-in at KeyArena. He normally weighs 180.
Means has been replaced by Marcus (The Prospect) LeVesseur (22-6), whose Seattle bout was cancelled when opponent Michael Chiesa fell ill.