Stop Shopping Cart Widget from Auto-Displaying on Subdomains

So I recently was able to get Marketpress network activated and working properly for the global cart, but now ALL of our subdomains (200+) have had a shopping cart widget automatically inserted onto their sidebars.

This is not something we wanted to have happen, because we are only going to actually USE or ALLOW products to be created on a very small % of our sites.

Any way to disable this from automatically occuring and to remove them from the places they've been added to?

EDIT: I suppose one way to have done this would have been to make Marketpress a Pro Sites level ONLY plugin, right? Are we past the point of no return on possibly making that happen?