Glitched the Super Marcus Sweep Mission, co-op anyone?

So some of you may have heard of this infamous glitch before, where you’re inside General Knoxx’s armory and you do the floor glitch. But the bad part is when you walk over to the elevator and you tick the “Steal Loot” box but not the “Countdown Started” box.

Well I did just that, and now the mission is ‘permanently’ locked out of completion. Other than two ways I know of, either I redo every single mission in the dlc again on Playthrough 1 or I join a co-op session with someone who hasn’t beaten that mission yet, who’s also on Playthrough 2.

I’m really hoping I don’t have to do the first option…