Much though you dislike it, you may have to call up your former employers [no, not fun-die at all :-)] and persuade them to sign off on such a duplicate certificate. It would allow you to (at least) drive the van down yourself, rather than towing it [which may cause damage to the transmission]; it may also get you "off the hook" as far as that [US federal government?] fine is concerned.

Just a thought ...