The crew, who knew their books well, decided to close down No 1, raise the gear, and then restart it. It all ended up with a happy ending and is a classic reminder that tech training these days is perhaps a little shallow.
Shut down one engine AND have the gear down would be a bit of a performance killer. On more occasions than I care to recall this sort of crew action results in a monumental cock-up and the a/c in a worse state than before.