No. I'm not sure how that helps the issue with my existing nsec being out in the wild.
Discussion
No, you are probably compromised.
... so I guess after sleeping on this some more, I guess there's something in nostr that needs to be addressed; a signable, provable way to know that you were the original owner of the npubs/nsecs preceding your current account.
Eg: I know this npub/nsec is compromised. It would be nice for me to have some "pointer" from this account, to a new account, so people can always be assured they are following the "original" account creator. IOW, I should be able to provably migrate that "this" @cornokun account is going to authoritatively be me, under a new security model - once established in the future... if that makes any sense...
... although if the npub/nsec is compromised to begin with, I guess someone could force an evil delegation and I'm fucked either way before a solution is rolled out.