But in your scenario, the Senate would need 60 to pass this new “fixer” bill.
No. I'm assuming that they will try to do this via the reconciliation process. I don't think they can pull it off but I think they will have to try. Pelosi is bleeding votes in the House based on today's news reports so they are going to have to conjure up some sort of "promise" to the House that their required changes to the bill will indeed be made. This can only be done by some sort of advanced reconciliation bill that the Senate can vote on. I don't think the members of the House are going to accept any kind of verbal promise on this issue. In fact, some Congressmen have stated that they are voting NO and they will not change their vote based on any sort of 51 vote Senate Plan. This thing is falling apart for the Dems.