First and foremost you need to clip off all the dirty wool. The sunshine will bring flies, and flies lay eggs in dirty wool which, if not spotted and dealt with immediately, hatch into maggots and eat the sheep alive.
You imply that you would not still have these sheep but for the virus. If you could find a local farmer or sheepkeeper - through Facebook or wherever - who could take these sheep, I am certain the transfer would be legitimate for animal welfare reasons. You could arrange for it to be done without yourself having to leave the house, so you would not put yourself or others at risk.