Terrific episode. I liked that the pacing did not let up at all. Rick dealing with the prisoners was top-notch, and I felt it was a defining moment for the character and the show. I look forward to seeing what develops with the other two prisoners... I'm hoping Axel (white guy) stays true to the comics but I'm also prepared for changes, as I always am at this point.
Also, 5 guys who were stuck in cafeteria for better part of a year would be near crazy, I'd think. I'm not sure why any of them would want to stay in prison. They damn sure would not be so neat looking...was the barber shop in there, too?
I feel like normal people getting forced into that situation (staying in 1 room w/ four others) would go crazy, but those guys
were in prison. They were probably well acquainted to sharing confined spaces with others for long periods of time. And as for grooming, if they made this work:

I'm sure they did just fine using pots and pans as mirrors and cutlery to shave.