Leftlane, a buddy of ours has delt with coon dog paralysis. He has a bitch who was down for over 30 days...I can't remember exactly how long. I remember she basically couldn't swallow, or move anything from the neck down. At one point during her recovery I saw her and her legs were shrunk and drawn up. I commented to him he should put her down, well he didn't. Like your dog she was a coon specialist. Anyhow she eventually made a full recovery, but no hunting in her future. He plans on breeding her this year.
If you would like his # I'd be happy to PM it to you, good luck!