Site went from pr3 1000+uv a day with some top 10 2 keyword phrases to pr0 35-70 uv a day for mostly long key words 6 - 9 word searches, In the last 3 months and hasnt even come close to recovery. Somedays its gets less than 20 uv

am i correct in assuming google killed this site during the panda purge and most likely sees it as spammy or bad neighborhood? The reason i ask is the site has 2500 plus wordpress video post and im considering nuking the site and starting over fresh... good idea or no?