Seems that dscl . -mcxdelete /Users/username command (from this KBA https://jamfnation.jamfsoftware.com/article.html?id=144) doesn't really do much in Mavericks to remove MCX settings from our local admin account. Deleting what is under /Library/Managed Preferences/ for our admin account also doesn't do anything to temporally reset settings for support staff to troubleshoot things we "manage" for end users.
All of the above worked in Mountain Lion but so far in testing nothing seems to remove the MCX settings for the targeted user while bound to the JSS. I'm running 8.73 with the GM build of 10.9
If anyone has any suggestions or know another way with Mavericks i'm all eyes :)