sure it didn't have a remote lube hose in the bottom of it that was ripped off or fell off?. leaving a hole in bottom or side of throw out bearing. not to ask a stupid ?. but have you removed inspection cover and looked at the bottom of throw out bearing to see if it might have been broke off by some grease monkey that may have jerked the grease gun off instead of pulling it off the fitting?. can't imagine it has a sealed lubed for life bearing installed.