The sponsor is undergoing changes, yes, but this has no influence on the install/uninstall procedure....
Testers have tested the install/uninstall procedures many times and each time the sponsor is uninstalled completely!!! Of course you need to follow instructions and not try to uninstall it manualy or with anti-adware programs....
detailed instructions can be found here:
http://udcx.com/sponsor
official instructions:
http://shoutbox.menthix.net/showthread.php?tid=21598
(and these instructions DO work 100%!!)
Like suggested
EDIT: of course it will only uninstall the Plus! sponsor, it won't/can't uninstall other adware/spyware that you may have on your machine... (which often _looks_ like it is from Plus!)
/ 
