If so, it ended pretty much the way most sensible people predicted it would:
The Star has learned exclusively that the voice cast of Futurama has just signed a new contract with Fox after weeks of intense salary negotiations… The compromise agreement, with the studio paying more and the actors accepting less, comes after the announcement of a 26-episode pick-up here by Comedy Central.
So the studio threatened to replace them as a hardball negotiation tactic, but it was never likely that they would actually be replaced. See Mark Evanier’s post from a few weeks ago, where he explained how these things usually play out.
(Link via Topless Robot)