As for the F/O, it was covered here in some detail that a Ryanair F/O had previously refused to fly after a very emotional and stressful altercation with a captain (in which, being familiar with the story, I consider the Captain was completely in the wrong).
The outcome? F/O was sacked the next day for refusing to fly, subsequent unlawful dissmissal claim settled on the courtroom steps.
Would LHR or any other FR appologists care to speculate what would have happened to this FO if he had refused to get back onto the (Now technically U/S!!) aircraft??