Like maybe he was like "screw wasting my A-Team on this guy, I'm going to teach him a lesson. Bottom of the barrel for you."
I needed a reason. I was like "who are all these losers he hangs with?"
There was a reason.... Several times mentioned. But the main scene was when he was in his office and they were talking about him (Jimmy) all started doing this because he was like Doug and didn't have any real friends or anyone who could be HIS best man.
So yes, bottom of the barrel was all he had because he never needed to find 7 groomsmen before. Mostly 3 max.