Waffle from Wendy? Or are Labour going to back a referendum?

Ruaridh Nicoll in the observer:

At the Apex, Alexander hinted at how she might be prepared to call Salmond's bluff. 'There will be a referendum in 2010,' she told the delegates.

That's quite a statement. Why must there be a referendum? Her certainty was odd, for there is no need for one. The SNP have not got the votes in Parliament to call it. Could she be planning to have Labour back this call? Her advisers were not forthcoming, beyond encouraging speculation.
'There will be a referendum in 2010 and the SNP will lose,' she told the delegates.

http://politics.guardian.co.uk/comment/story/0,,2165514,00.html