This is the quick and dirty solution (and may be all you need):
Insert TeX before tableofcontents: \rhead{}
Insert Tex after tableofcontents: \rhead{\rightmark}
This may conflict with other things you have done with the preamble and other ERT and end up not being what you want.
A google search on rhead lhead chead fancyhdr will turn up many options. Also, the PDF at http://www.win.tue.nl/latex/documentation/fancyhdr.pdf is a quite good reference for fine tuning various header and footer layouts.