--the old "your serviced are no longer required, but before we toss you would you train the people remaining to do exactly what you used to do" gambit.
I not only would be attempting to charge them massive fees, I would, in my training, be planting little "cherry bombs" that would go off at most inopportune times--you know, those small, creative, annoying acts of sabotage (like the Clinton administration removing all "w" keys from the keyboards before the Bush's came into the White house in January 2001) that make life worthwhile--but of course that just's me . . .
Hope you'll be getting a downtick in symptoms soon.