Of course, some passengers might be tempted to give him the traditional Muslim insult of throwing their shoes at him. The flip-flop and earth shoe crown might not do much damage, but the callused hands & steel-toed boots construction worker crowd might be a different story.
(did someone just mutter something about the punishment fitting the crime...)
Yeah-or sit him so that only his nose sticks out hole just above the track the shoes in the buckets pass by, forcing him to breath in shoes (used shoes) all day long as penance before he returns to jail at night.