This WPS office is a real pain - it is easily installed by a non-admin user but then performs some sort of check when you uninstall so that it has to have admin rights and so takes IT staff to remove it!
We have had a spate of schools using it so that the software can be installed on everyone's home PC and when they do so in the office it gets installed on the RDS server!
What a scam!
We need to block the WPS site on the firewalls I guess...