Hiya @etienneb, welcome back to the forum 
The disqualification is irreversible and permanent. You can go ahead and delete the entire US1 folder if you want, it won’t play any difference. Don’t touch the other satellite folders if you don’t have any dataloss there, and they’ll continue to be unaffected.
The US1 folder is named ukfu6bhbboxilvt7jrwlqk7y2tapb5d2r2tsmj2sjxvw5qaaaaa. See information about the others here
I’d suggest starting a new node, and running two nodes on the same subnet. That way, the new node will be getting traffic from US1 again. The three other satellites will have a roughly 50/50% split between data.
Course of action, if I was you:
- Today: Create new node and put it to use
- 10 months from now: New node is fully vetted and held back period is over. At this time, cap the size of old node to what it’s currently at that time; all data will go to the new node; old node will stay the same size for ever - new node continues to grow
EDIT: Added satellite info