I recently just tried to get back an old account that was frozen over 5 years ago for using programs, I think. I'm lying to say it was hacked that long ago and someone else used the programs not me. Blah blah. Longshot indeed.
Anyway, so I thought that if I did it directly from neopets that the accounts I use now would be endangered. I only have 4 though and not 5 so perhaps since I do not have 5 they wouldn't necessarily care - since you cannot have over 5. I would say if you regularly use 5 accounts you could be endangered. I can't 100% say for sure.
What I am trying instead is directly e-mailing support@neopets (for whatever reason you can't e-mail frozen@neopets so I don't know if they changed how they handled it?) Just in case they try to track my IP. What I am unsure of is if my IP that I use the accounts on can be tracked from the e-mail I sent. (The e-mail is the same as the account I am trying to get unfrozen, but not my other 4 accounts). I can let you know if I get a response. If so it might be easier to e-mail neo instead of sending the ticket on neo from the e-mail of the account you are trying to get back. It has been 2 days and no response for me though.