So theoretical party goes to theoretical dungeon and suffers all possible negative conditions (xept death). Their theoretical healer have:
Heal
Dispel Magic
Remove Curse
Restoration
that he can cast at caster level 1000.
What effects exept petrification he cannot remove?
How does he have caster level 1000? Is it a cleric? He cast miracle as a worst case scenario to gain access to any spell needed to heal the party in any capacity.
Pupsocket is right though, amputation would require Regeneration.
Reincarnate. You're body will be all better. It'll be new, young, and quite possibly a different species entirely. As an added bonus just change your name and your debtors will never find you! Score!