Thanks… I actually ended up renaming the files_external_onedrive folder that was already there to files_external_onedrive_bak, and that actually allowed me to get back in to the GUI. From there I was able to disable the onedrive addon, then I went back in the filesystem and renamed the files_external_onedrive_bak back to the original name files_external_onedrive. This allowed me to now properly delete it from the GUI.
Thanks for giving me the ideas.