I'm not surprised that people offered to stay. The vast majority of controllers I know are there to talk to the planes; the thought of leaving them without a service when they could help would mean that many I know would definitely offer to stay, or come in and help. I don't think that has anything particular to do with how they feel about management, but about how professional and dedicated they are.
Cheers,
Northerner
"Keep smiling, it makes people wonder what you're up to..."