I suppose you could always wake up the skipper & ask him what to do?
We had an FO who a few years back mid atlantic in a empty 747-200 heard a company a/c divert into Gander ... without waking the skipper (who was in the bunks) he spoke to ops told them they were within range and promtly did a 180 ...
Needless to say the bleary eyed Capt. went 'ape' when he saw they were heading east ... the fact he had adinner engagement that evening also had a bearing on his reaction!