I agree with aceshigh73, but that doesn't fix your problem.
Every package I've received from AG is sent via UPS, however, UPS has never asked for a signature.
Do you have a neighbor that would receive your stuff for you?
A Post Office box would work too. You can get the tiniest of boxes and they will still receive your big boxes. When you get something big they put a note in your mailbox to tell you to come get your stuff.
I wish I was in Monterey, for a lot of reasons, but if I was, I'd make a special trip over to your work and detail your bosses car and then tell him to loosen the f^(& up.
Good luck,
S>