mad jock, the scenario you suggest is:
The Captain has a financial interest in not diverting (presumably couldn't pass all the cost back to the ticket seller)
The First Officer is sitting next to a Captain who is paying his wages and will therefore find it difficult to object to the Captain wanting to make illegal approaches.
Does anyone think that a passenger would have gone anywhere near that aircraft if they knew of the true circumstances? But then the passengers are led to believe that Manx2 are a proper airline and you wouldn't expect an airline to put you into that situation would you?