Thanks for the reply. I think I mostly fixed it.
I went ahead and deleted the DSS folder and so far everything seems to be okay. I also had to run a regdelnull which then revealed two more Securom folders in my registry and deleted those too. There isn't anything running in my task manager that shouldn't be there anymore. And the Securom folder stopped appearing in my User/<name>\AppData hidden folder. What a hassle.
I heard there may be other root files left in my registry but hopefully leaving them there won't be a big deal. As they don't say securom and I'm a little nervous to start deleting the wrong ones.