As for deleting the files try Unlocker
Code:
http://www.brothersoft.com/d.php?soft_id=208761&url=http%3A%2F%2Fusfiles.brothersoft.com%2Futilities%2Fsystem_utilities%2Funlocker1.9.0.exe
-Direct Link win32.bit-
http://www.brothersoft.com/d.php?soft_id=60547&url=http%3A%2F%2Fusfiles.brothersoft.com%2Futilities%2Fsystem_utilities%2Funlocker1.9.0-x64.exe
-direct link win64.bit-
http://ccollomb.free.fr/unlocker/unlocker1.9.0-portable.zip
-direct link 32/64 portable-
It may not help you, but its a useful app none the less.