If you can get them out without shredding them, I would say yes. BUT they are pretty tough to get out without messing them up. Better safe than sorry and get a new set for a couple bucks. I just swapped out my exhaust and destroyed the OEM gaskets.
I'd like some insight to this as well. My '09 CR is showing a few signs of corrosion on the exhaust. Painting and refurb seems a little cheaper than buying an aftermarket...