Two middle school teachers from Florida, Judy and Barnard
Lorence, should be back in their classrooms getting ready for a
new school year, but there's no chance of that now.  A moped
accident has left Mr. Lorence brain-damaged and lying in a bed
at Spaulding Rehabilitation Hospital in Boston. He can't speak
more than a few words, and he cannot move either his legs or his
left arm. Sometimes he doesn't even recognize his wife.  It was
44 days ago that the Lorences caught a ferry to Oak Bluffs and
walked the gauntlet of moped rental shops on Circuit avenue
extension. They rented one to share, Mr. Lorence driving and
Mrs. Lorence holding on behind him.  A few hours later, at about
2 p.m., they were heading down the Edgartown-West Tisbury Road
near Oyster Pond Road when a Buick sideswiped the moped and sent
both of them flying.  When they landed, Mrs. Lorence, who is 35,
had a bad case of road rash, but her husband, whom she calls
Barney, was not so fortunate. Like his wife, he was wearing a
helmet, but he suffer