Pam... what Wade was saying was to make up a new batch of starter, then add some of your stalled wine must to your new starter... maybe a cup, then let it sit for an hour or so, then add another cup and let it sit a bit, and so on... until you have doubled or tripled your volume of the new batch of starter.
This method allows the yeast to become acclimated to the environment into which it is about to be introduced, and will virtually eliminate the possibility of the yeast dying from shock when it is introduced into the wine must...of course the temps of the starter and the must be similar.
I know you already know this and please forgive me for jumping in here... sometimes we just get ahead of ourselves and overlook the obvious.
Let me know how the wine turns out...
HB