Root Uninstalling Rom Manager!

So I have installed CM7 on my Espresso (MyTouch Slide) ... You know when you flash CM7 it has Rom Manager (free version) on it and it seems there is no way to get rid of it! I used couple of Root Uninstaller App but didn't work! I even deleted it from System/App :O ... This is Ridicules! I have the Premium version of Rom Manager in APK and I want to replace it! I'm not really able to buy it from market :( when I install the Premium version on the cm7 version I doesn't make Rom Manager, Premium!
Any suggestion?:(