Pouring them would ruin them! Oxidation is a very big risk.
Even opening a small bottle, and then recorking and drinking the next day will show you the changes in the wine and it won't be good!
I don't know that they'd be easy to rebottle, though. Maybe try purchasing a "vacuvin" first to see if that works rather than trying to rebottle gallons of wine.
Broken Leg Brewery
Giving beer a leg to stand on since 2006