sometimes when a mob hits you and you are under heavy heal you just die even if you have hp left. sometimes heavy heal doesn't needed for this to happen just can happen anytime you get a high damage. as i experienced it only happens while getting damage from mobs (cz tower included).
i think if someone dies with hp left some mob and sometimes some ppl will not see him dead. so as i think this is the bug causing the 'cz tower bug'.
a noob gets high damage from the towers and dies with hp left. then as he relogs some towers will see him alive. (like you can see him alive if you /town into a crowded town or get tp to town when a lot ppl around)
i think if they would fix the counting of hp when a high damage is recieved that would fix the tower bug again.
(and would help me not getting expd everytime killing a boss )
p.s talos dropped belt of dex, tk dropped agate earring