General Motors is is "open to considering moving its headquarters from Detroit, selling off U.S. plants and even renegotiating parts of its restructuring plan with its major union," CEO Fritz Henderson told Reuters today in a conference call. The possible relocation and renegotiations are part of a last-ditch effort to restructure GM outside of bankruptcy, a move that Henderson admits is likely to fail. "It's more probable that we would need to accomplish our goals in a bankruptcy," says Henderson. "There's still a chance for it to be done outside a court proceeding."