If you can afford a small downtime, Turn on eigrp debug and see if you can see the hello packets from the spoke or not.. If your network isn't critical you can try following (Do on your own risk. Author of this post is not liable to any of the damage...
Regenerate crypto keys. I assume you have already generated general purpose keys as you've mentioned that you can access from inside. What does debug say "debug ssh" ThanksMusab
