First: Crusader's Armour is NOT a glitch, the MTA team or whoever made those Chars. made the crusader has full armour! everyone spawn crusader with armour! Like the Police, they always have 50% armour
Spawn as something else first, after you die, spawn crusader. after the crusader died, spawn crusader again, you shouldn't going to be kicked of trainer usage by then! (that works for me anyway)
and...if the crusader armour is REALLY not good, maybe someday MTA team can just DELETE the crusader choice, and replace it with something else!!