Hello JIM, even if you take v9 out of the context that it's written in (including not only 2 Peter, but the whole of the Bible itself) it still says too much on its own for the "us", the "any" and/or the "all" in that verse to be understood to mean ALL of us w/o exception/both saints ~and~ reprobates.
2 Peter 3
9 The Lord is not slack concerning his promise, as some men count slackness; but is longsuffering to us-ward, not willing that any should perish, but that all should come to repentance.
God makes it clear that the reprobate will be judged on the basis of what he/she did or did not do in this life, not on the basis of their fallen nature .. e.g. Romans 2:12-16.
Of course, this (the basis for the judgment/condemnation of the reprobate) has little, if anything to do with the doctrine of Original Sin. Rather, this Biblical doctrine (named "Original Sin" by Augustine, if memory serves) tells us how the lot of us ended up as sinners.
If you were working at the Mattel factory and you came back from a coffee break and found 10,000 Malibu Barbies w/o right arms, you wouldn't go doll to doll to doll scratching your head trying to figure out what happened, rather, you'd immediately go to the source to find the problem, of course. THIS is what the doctrine of Original Sin seeks to do, to establish the source of the most common trait that every human being throughout history shares.
So, the only "disaster" that I can see here is the one that would come from not knowing the truth, that God didn't make/create us this way, WE did (or, more specifically, our progenitors did .. in whose fallen/tarnished image we have all been begotten).
Finally, what is your definition of Total Depravity, or perhaps even better, what do you believe that it is seeking to teach us
Thanks
God bless you!!
--Papa Smurf
Ephesians 2
1 You were dead in your trespasses and sins,
2 in which you formerly walked according to the course of this world, according to the prince of the power of the air, of the spirit that is now working in the sons of disobedience.
3 Among them we too all formerly lived in the lusts of our flesh, indulging the desires of the flesh and of the mind, and were ~by nature~ children of wrath, even as the rest.
4 But God, being rich in mercy, because of His great love with which He loved us,
5 even when we were dead in our transgressions, made us alive together with Christ (by grace you have been saved).
Romans 3
9 What then? Are we better than they? Not at all; for we have already charged that both Jews and Greeks are ~all~ under sin;
10 as it is written,
βTHERE IS NONE RIGHTEOUS, ~NOT EVEN ONE~;
11 THERE IS NONE WHO UNDERSTANDS,
THERE IS NONE WHO SEEKS FOR GOD;
12 ALL HAVE TURNED ASIDE, TOGETHER THEY HAVE BECOME USELESS;
THERE IS NONE WHO DOES GOOD,
THERE IS ~NOT EVEN ONE.~β