A Cunning Plan by the SNP

The SNP's Nicola Sturgeon has called upon the Scottish Parliament to recommit to the principles of the Scottish Claim of Right:

Presiding officer, the motion for this afternoon’s debate is deliberately simple. It states that “This Parliament acknowledges the sovereign right of the Scottish people to determine the form of Government best suited to their needs, and declares and pledges that in all its actions and deliberations their interests shall be paramount.”

This paraphrases the Scottish Constitutional Convention Claim of Right, 1989, to which all Scottish Labour and Scottish Lib Dem MPs - with the exception of Tam Dalyell - put their names:

We, gathered as the Scottish Constitutional Convention, do hereby acknowledge the sovereign right of the Scottish people to determine the form of government best suited to their needs, and do hereby declare and pledge that in all our actions and deliberations their interests shall be paramount.

It's very difficult to see how today's Labour and Liberal Democrat MSPs could refuse to endorse Sturgeon's 2012 Claim of Right, and having done so, it's very difficult to see how they could then fail to cooperate over the inclusion of a Devo-Max option on the referendum ballot paper (seeing as the majority of Scots seem to believe Devo-Max to be "the form of Government best suited to their needs".