A 480-pound Stuart, Florida woman has died after emergency workers tried to remove her from the couch where she had remained for about six years.Gayle Laverne Grinds, 40, died Wednesday, after a failed six-houreffort to dislodge her from the couch in her home. Workers say the homewas filthy, and Grinds was too large to get up from the couch to evenuse the bathroom.Everyone going inside the home had to wear protective gear. The stench was so powerful they had to blast in fresh air.Apreliminary autopsy on the the four-foot, ten-inch woman lists thecause of death as "morbid obesity." But officials want to know moreabout the circumstances inside the home.Investigators say Grindslived with a man named Herman Thomas, who says he tried to take care ofher the best he could. He has told them he tried repeatedly to get herup, but simply couldn't. No charges have been filed, but officials arelooking into negligence issues.Emergency workers had to remove some sliding glass doors and liftthe couch, with Grinds still on it, to a trailer behind a pickup truck.Removing her from the couch would be too painful, since her body wasgrafted to the fabric. After years of staying put, her skin hadliterally become one with the sofa and had to be surgically removed.She died at Martin Memorial Hospital South, still attached to the couch.