A extreme example of that was an British Airways 747 that shelled an engine taking off at LAX and continued on toward Heathrow.
Yes, and we all know the repercussions of that event.
My point was specifically in relation to the flight in question, not a general observation on 2 vs 4.
It's inconceivable that VS would have carried on another 1000+ miles to their scheduled destination, overflying a dozen potential diversion airfields in the process, whether legal or not.