That would be sch 80 threaded PVC since it has metal couplings. You don''t have to take it apart at all. Just don't bend it too much at the couplings where it is threaded. It will bend more than you think, but don't bend it much when it is really cold. Have someone take the well seal or pitless half across the yard while another one or two pull it up. You can set it back the same way.
Don't cut it and glue it back together!