Sure, just start small. You want a fast fermentation to alleviate any sanitation concerns, plus the yeast viability is probably very low. I like to start with 50 mL of ~1.030 wort, and if that takes off step it up to 200 mL, then 500 mL. That will reproduce back up to the cell count of an oldish smack pack. At that point I give it the smell/taste test, and if it seems good you can pitch into your full-size starter.