Hi, @byefrancis and @Daniel_Schultheiss, if you ever run into a case where you think all the bindings are deleted, but they are not, try to do a full version save of the site, by pressing cmd+shift+s in Mac or ctrl-shift-s in Windows.
If that does not allow you to delete the collection element(s) then send an email to support@webflow.com, we can help you quickly with that kind of issue.
At the moment, it is a lot easier to ADD a collection than to remove collections, although improvements in this area are to be expected 
I hope this helps!