Tag Line Location with Pro Sites

I'm using ProSites and have installed the "Set Blog Description" plugin (so users can use their own tag lines rather than the default WP one).

With ProSites, the Tag Line window appears at the end of the page above the "next" button.

Ordinarily, not a problem, but the sign up message you can add within Pro Site appears immediately above it so it all seems very disjointed: you set your blog name, then get the Pro Site stuff then the tag line input.

Any way to change this?