It's defiently something to do with the jigoshop plugin, which is strange as I've checked both our versions and they're the same. The pagelines integration on it's own doesn't seem to change the text alignment on it's own, but activating the main jigo plugin definetly does. I will report this to a developer and see what they suggest. As you've already reuploaded the framework, in the meantime I would say install a fresh version of jigoshop and upload that to see if there was a corruption in the current one.
For the time being until we can work out exactly what's happening the below can be used/adjusted to fix.