I saved and closed a clip while V-Vocal was on repeat. On re-opening, the track will play normally until it reaches the clip and will not pass that point, just repeating the clip over and over. I went to 'remove V-Vocal' but the option is faded and not possible to select. I then went to history but it's not possible there either. Is there any other way to remove the repeat? Thanks.

I'm guessing but I suspect that this has nothing to do with the clip or V-Vocal and that you have looping set between these points on the timeline coinciding with beginning and end of the clip.
 

Thanks Kev. I'll have a look. If so, it's accidental!  :O

Just delete the V-Vocal clip and un-mute the original clip, which should still be there behind it.