I resently approved a service pack for office 2010 and it messed up any user that had any office 2010 componnent without having the entire office 2010 package.
This is expected behavior. The Service Pack applies to any system with any component of Office 2010 installed.
Users ended up with 2 complete office suites
But this is NOT expected... the Service Pack should not be installing components that did not already exist.
I was instructed to decline the service pack. Will this decline recall the patches or it will just prevent other users from getting the updated when they connect.
Declining an update does not uninstall/recall anything, it merely prevents any additional clients from installing the update.
To uninstall the update you will need to go back into the approve menu for the Office service pack and choose "Approved for Removal".