problem removing program from phone

[painkillaz]

I installed the s2w lucid theme with that whole XIAMultiTheme thing. After a few days of my phone lagging a lot b/c of the programs installed I decided to uninstall it. However in my programs folder there still is the XIAMultiTheme folder and everytime I turn on my screen I get a pop up that says "Notification Error: Cannot execute \Program Files\XIAMultiTheme\XMT_OnPowereOn.exe" I went into file explorer and deleted any folders associated with the programs that were installed but the folder remains and the pop up continues to show up. Any help is appreciated, I know this could easily be fixed by doing a hard reset but I really don't want to go through all the trouble of putting my contacts back on and every other program I have on my phone. So if anybody has any suggestions it would be much appreciated.
Thanks in advance,
-S