Who said WB was the cause?
In my case, Deskscapes 8.20 is the cause. Deskscapes 8.10 does not cause the multiple explorer.exes.
If you're savvy about your PC and your software, you'll have kept the archived versions of all your Stardock software. ODM, and SDC both have a default save directory. Older versions would be there. On your PC.