I had a major internet breakdown on my home connection that took my ISP one month to fix …
Unfortunately my storj nodes were offline during the whole time.
I restarted then as soon as the connection was repaired and they were disqualified. This is the very first time (and I hope the last time) I had such a long breakdown …
Disqualification is permanent, unfortunately, and you’d have to start a new node. You could run the new node in conjunction with the old node and eventually, when the new node is vetted, run graceful exit on the old one.
Afaik you cannot run graceful exit on a disqualified node, so I agree it would not be useful to continue running the node(s) unless they are still not disqualified on some satellites.