Immediately after the Lib Dem wobble, one of Plaid's gang of four was apparently heard to say "Saved by the Lib Dems. Who'd have thought it?". For those in Plaid who opposed the Rainbow, the wobble was a godsend, even if only by buying more time.
But there is also opposition to the idea of a coalition with Labour in some quarters - not least in the blogosphere (Ordovicius, Miserable Old Fart). Could there be an answer which lets both sides of the debate in Plaid off the hook? And could the Lib Dems once again ride to the rescue, like the 7th Cavalry always used to do in the cowboy films?
Vaughan Roderick suggests they just might. Vaughan says that the other three parties all have something to gain from the Labour-Plaid deal; Labour stay in government, Plaid get into government, and Nick Bourne becomes Leader of the Opposition. The Lib Dems, he says, become nothing more than a peripheral party of opposition, spending the next four years in the political wilderness.
But there is another scenario in which Labour avoid doing a deal with Plaid, Plaid are kept out of government, Bourne remains the junior opposition leader, and the Lib Dems move to centre stage once again.
According to Vaughan, all that Mike German has to do is pick up the phone and talk to Rhodri......