No doubt, sups do as they always do, find something to nit-pick.
A driver I preload for said he was closing his bulk head door that was behind him. A rid-along-safety-sup said " you need to square up with the door, face it and then close it". Its bs, these sups have no reason getting paid by UPS.
Overall, I figure these are people who like to play dress up. Get paid a lot to badger real hard working people for their common daily work. I'd like my sup to work my cars for a month, in a week around Thursday or Friday, you'll be ready to quit. And i've been doing this for a year and six months.
That said, sups job is to give as much grief to little stress for themselves. These people sit in offices where A/c and heated rooms are common. Most of them hired off the street and never worked a hard job in building or anywhere else. That is why they are fired so easily, and why they are so rash in observence. I say screw'em, in a year they will probably working somewheres else.