After 50 or 60 restarts resulting from uninstalls and reinstalls with slightly differing characteristics, I was able to get a system restore done by the following:
- Uninstall ownCloud
- Fully remove directories from Program Files, :/users/[user]/ownCloud, :/users/[user]/AppData/Local/ownCloud, :/users/[user]/AppData/Roaming/ownCloud
- Reinstall ownCloud
- Create directory :/users/[user]/ownCloud
- Initiate System Restore