Delete/disable widget or filter results

I have a serious issue affecting our production environment. We are using widgets to send out signing urls to customers for certain contracts. It seems we've hit some volume threshold such that the .net SDK method "GetWidgets" is timing out. After creating the transientdocument & widget, I have to call GetWidgets in order to get a signing url. My question is how to fix this:

1. Is there a different way to get a signing url? I have tried the agreements/signing url but there is no agreement attached to these widgets - calling the get agreements returns nothing

2. I also tried to delete widgets that have been signed. I have the original widget id, but when i try to do the UpdateWidgetState it errors out or gives me an "invalid web form it" error.

Is there a way to filter the GetWidgets? Alternatively, is there a way to get a signingurl from the GetWidget/WidgetID?

HELP!