Possible Clues:

• Get away from depravity
• Be free to see about the headgear
• See about a stopper for this vent
• Leak; avoid
• Take off enormous unlined cloak
• E's got something to keep the rain off and get away with it
• Getaway car? (Ford)
• Con's preoccupation, perhaps
• Way out (from difficult situation)
• Slip out from the class finally, having got cloak