Well, it's growing, as it should. The only thing which is problematic is the timing - it should have broken dormancy and grown like this last spring, April or May, not now in the autumn.

Anyway, you're going to have to protect it through the upcoming winter, since it's NOT really at the stage where it will harden off the wood and go dormant. I'd try, if I were you, to probably keep it indoors in a sunny window AFTER it becomes too cold to safely leave it outdoors, and keep it going until next spring when it can go back outdoors.

Perhaps others will have some different thoughts on the matter.

It was originally a two foot high plant with loads of grapes on it, but it got moved, I forgot about it, and when I found it I had to cut it back to a two inch stick just to find any green beneath the bark :( Maybe it thinks it is spring. I was going to bring it indoor and keep it in the outhouse when the temps start to reach freezing. Its really sunny and doesn't get hot in there in the winter.

Will I have to worry about anything while its indoors. I grow citrus mainly, and if they are in a sunny position when their roots are at less that 55F they drop their leaves - will I experience any winter leaf drop or anything similar with this grape?

Thanks for your advice so far, and the quick response time :)