Re: Rock and hard place
There would need to be another referendum
There can be no more referendums on this issue, the electorate have spoken. Any further voting on the continuation of the union is now a matter for the English, Welsh, and N.Irish.
Those north of the border voting SNP to back a labour minority government should consider carefully how they would survive ejection from the union, for that is certain to come about the very next parliament after Sturgeon finishes using Milliband as a glove puppet with which to rape England.
Based on the SNPs own referendum numbers, which were always wholly unrealistic, you'll be looking at public spending cuts greater than 50%.
By all means vote SNP, but there must be no mandate or instruction to prop up any minority party.