Can crota boss be cheesed? Only one I know of is leader logging off when he's down, and that proves more effort than it's worth doing properly. If you're in a good team then crota is pretty easy period.
The exploit is actually very little effort. Sure, if you're in a good team that kills him first time, every time, then doing it as intended will be about as quick.
We tried the exploit last night and it worked perfectly. We also did it "legit" (I hate that term...) earlier in the week. While the exploit is there, I can see it being too tempting to not use, especially if it's getting late or there's been a number of wipes.
I won't be crying when they do fix it, but until they do, if I have the choice of getting loot in five minutes or doing trial and error for 2 hours to get it, it's going to be difficult to not go with the former.