Originally Posted by Jesus H Christ

If you were running a blast like xrumer and got banned? - Throw the domain away. Even if you were able to get it indexed again, it will never be the same for years if ever. I've had a term relevant 4 year old domain (at the time) get banned with 100% fresh original content (100gb) that took years to build.

I fucked up, got it banned, changed the domain owner, 6 years later with pure whitehat methods it finally broke a PR1 with some SE listings.

If this is what you've done ie., xrumer, bite the bullet and move on.