This is classic Richard Branson. He plays a certain line in the media, that has absolutely no chance of coming off, yet it's spun in such a way that the innocent/ignorant buy it and the competitor on the receiving end can usually do very little to try and counter, as they need to use detail to counter Branson's one-liner.
You only have to look at the decision of British Airways to retire Concorde. BA had been spending millions to upgrade the aircraft following the Air France Paris crash (kevlar lining to the fuel tanks, new reinforced tyres, refurbished interiors) but Airbus decided they weren't going to continue supporting the aircraft. Air France and BA pretty much had to call it a day. Yet Branson walked on and said BA was withdrawing an icon, and that it should hand over the aircraft for £1 each, the price BA had supposedly paid. Nice headline, and cue BA having to come out with the technical explanations (withdrawal of manufacturer's support to maintain airworthiness of the aircraft) and the financial situation of the 1980s (UK Government wrote off Concorde's development costs, and sold the last two aircraft that nobody wanted to BA for a nominal £1 fee, but ignored the fact that BA had still outlaid millions over the years on the 7 aircraft). It never had a chance in hell of coming off, but Branson pitched himself as the saviour of a British icon from unfeeling, corporate BA.
Branson knows there's not a chance in hell the DfT will reopen the bidding for the WCML, as it would throw the whole franchise process into a mess if DfT said they got it wrong (cue challenges each time other companies lose, or fail to win, a bid). I'm sure First Group would also launch a challenge in the courts. Virgin Rail is dead, but Branson is now milking this for the publicity for Virgin Group as a whole, the consumer's champion who has been hard done by yet again by greedy government and big business.
Lets get the contract with First signed, and move on. Let the new regime set out its stall, start working to win over the passengers (heck, if First perceive that Virgin have a loyal following then surely they are going to go all out to win them over?) and importantly let them start working to the takeover day and build a new relationship with the many employees they will take on from Virgin under TUPE rather than leave those hard working railway men and women in limbo wondering what's going to happen next.