Funny this thread should be bumped to the top. I was at 5 Guys last night for the first time in about a year and had a great burger, aside from a complaint to the manager.
The guy putting toppings on buns was wearing gloves (good), pulled his phone from his pocket and wrote a text message while wearing said gloves (bad), then went back to putting toppings on without changing his gloves (double bad).
I told the manager and she was apologetic and had him change his gloves but he did not remake the affected potentially contaminated buns (the burgers were still on the grill). I'm sure much worse happens in closed kitchens, but it left a bad taste in my mouth and I'm not sure if I'll be back for a while.