I smell bacon
Someone could well be telling porkies here, think about it, all of the following needs to be true:
1. The manager or staff needs to be on Twitter
2. If it's not the manager then one of his staff needs to admit they were on Twitter to their manager during work
3. Said manager or employee needs to actually give enough of a crap to make more difficulty for themselves
4. They identified the bloke in the queue from his Tweet