How is leaving messing with a server? People leave from PvP matches all the time. Wouldn't the IB1 be considered a cheatfest then as well? Cheats are direct modifications of the coding to give them an advantage or automatically unlock locked areas or items. This is why getting the Frontier Shell is still a bannable offence. Crota is brought down on his knees in a legit fashion and killed in the way the designers have meant. For some absurd reason, Crota is linked to the Host of the game. This is most likely a simply bad written code which is being exploited until it's fixed. This was probably even discovered when the Host of a regular game lagged out, where the rest of the team discovered Crota wasn't getting up again. That's why it's a simple glitch, no more. Enemies get stuck behind things all the time in games, which makes them easily killable. Just because it's a boss doesn't mean it's a cheat. For example the Warlock glitch where you can respawn at the last second so all enemies despawn. Faulty coding.