Probably the PlasticSCM5 folder will still be somewhere on your computer, but you can just find that in your C:\Program FIles\PlasticSCM5 (or wherever you installed it) and you should be able to safely delete that folder for extra measure.
Probably the PlasticSCM5 folder will still be somewhere on your computer, but you can just find that in your C:\Program FIles\PlasticSCM5 (or wherever you installed it) and you should be able to safely delete that folder for extra measure.