He won't lie down because he doesn't feel safe after losing his companion.  Horses rely on herd mates to keep guard when they lie down and are vulnerable.  He's even more anxious because he knows he is incapacitated.  If the goat isn't actually in the stall with him, try that.   Hanging a tarp or blanket across his stall may also help.

You may end up needing to have your veterinarian out to do nerve blocks so that you can attend to the feet.  Also discuss the possibility of changing to a medication with more direct anti-anxiety effects, like diazepam (Valium), which works very well in horses.

Eleanor in PA
www.drkellon.com
EC Co-owner
Feb 2001