This is a glitch my team had to deal with it last night. It's not for cheesing or trying to make the fight easier, tbh it makes it that much harder. In the final fight with Crota, if the holder of the chalice lags out or disconnects while still holding the chalice, the chalice will disappear entirely from the arena, it won't re-spawn at all either. I believe this to be a major glitch in the fight and shows there wasn't enough testing done before-hand. However I should think that Bungie will be able fix it, as easy as they fixed the templar's relic respawning if it leaves the arena. I'll be making a separate thread just for this glitch as it's a major bug if it happens, and needs to be addressed ASAP.