1) Get your Site/Page removed from google's index! Fastest way: 1. disallow it from robots.txt 2. return 404 error for that url/whole site 3. use the "remove site/url" option from GWT. I tested this on dozens of sites, it deindexes the whole site in a few hours max. 2) New Domain! 1. Get a new domain 2. Then I re-import the posts on a new domain, etc!
HORRIBLE method. 301's PASS penalties. This kinda advice warrants a ban as you are recommending advice where in experienced SEO's can cause a ton of damage to a business. Do NOT just go around deindexing sits and 301'ng them.
gee, first you need to ask yourself why you got banned, then suggest start a new site, and just transfer everything over.... more then likely you deserved the ban... so no surprise there...