He didn't throw anyone under the bus except for a bunch of deceiving and dishonest Republicans who voted for the eight page shell and sham Legislation knowing it wouldn't pass through reconciliation with the House.
The bill he voted no on was never going to become law. It was pure political theater.
As opposed to those deceiving and dishonest Democrats that passed the fuster cluck (they call Obamacare)in the first place? They flatly and plainly lied to the public to gain support and pass Obamacare that's was going to fail eventually but that's OK?
Not sure where you stand on this, but It was pretty clear that McCain was working with the Democrats on that vote watch the video they all knew it was coming, maybe it's in a bid to try and bring sides together to work together?