Do a search on HBT for yeast washing. There is a thread with pictures and a description. I just used 3068 for the first time and it is fermenting like crazy. Make sure and use a blow off.
If you were making the same recipe I would recommend re-using it, but since it's not the same some of the characteristics of the cider will show up in the beer.
I even washed it and the flavor was adversely affected.
Trust me on this one. I know it from experience.
Use a new yeast for your next batch and you'll thank me for it.