Who said anything about going back to aviation afterwards!!??
When you see some of the comments made by pilots on this forum about their working conditions I find it difficult to believe that Virgin trains would be any worse?
A contract is a contract - please tell me where the word "ethical" comes into it. It's a free country and we have the right to market our skills and expertise to anyone who wants to buy them. Would you turn down a pilot's job on the Shuttle because it's not "career"??