Glad your problem’s solved, but if this ever happens to you in the future you
may want to give Volkov Commander a try. It’s a Dos based file manager that
will also work in Windows. It’s only 4 k in size so it can even fit on a boot disk,
anyway it works for me every time with those stubborn undeletable files.
Volkov Commander (Freeware)
http://www.egner-online.de/vc/