The salvage operator said that when they viewed the sunken plane several days before the recovery it was fairly intact but it was destroyed on the rocky bottom after a serious swell.
http://www.kitv.com/news/hawaii/wreckage-of-fatal-molokai-plane-crash-arrives-in-honolulu/23572292
More likely, the salvage company tore it up, sounds like to me. They should have waited for calmer weather.