Help: Ripped in IFO mode now can't use DVD Shrink

By mistake I ripped a dvd using ifo mode instead of file mode, now I can’t seem to shrink it neither with Recode nor DVD Shrink. Both give a message about a wrong ifo.
Basically I’ve got a VTS_01_0.IFO and a big VTS_01_0.VOB… is there any way I can get these back to work? I don’t care about converting menus, just need the main movie.

u may need to get hold of a little program called IFO EDIT, it will create new bup and ifo files for your vob

you could just rip the dvd again too (this time in file/iso mode).