Possible Clues:

• Initially eluding staff, captive gorilla perhaps making getaway
• Get free of
• Run away
• Duck coming from headland following two directions
• Run away from mischievous prank, avoiding publicity
• Once you've made it, you're out
• Outfox the prison guards
• Slip out
• Manage to avoid onset of snow in Eastern headland
• Copy key first — and do a runner!