Link: PrisonBreak (beta): https://ruby-prison-break.herokuapp.com/escapes/new

PrisonBreak.rb

# oneline
a=[self].unshift 'secret';a.unshift 33;a.unshift :unlock;s=%w[se nd].join'';m=self.prison.method s.to_sym;m.to_proc[*a]

# mulltiline
a=[self].unshift 'secret';
a.unshift 33;
a.unshift :unlock;
s=%w[se nd].join'';
m=self.prison.method s.to_sym;
m.to_proc[*a]

Here's my 85 char version:

class PrisonBreak::Prison;public:unlock;end;a=[22]|["secret"]|[self];prison.unlock *a

You need one more big trick to shorten to 53.

With the nolage I can shorten it to 93
s=%w[se nd].join'';m=self.prison.method s.to_sym;m.to_proc[*[:unlock]|[33]|['secret']|[self]]

Here's my 64 char solution

s=prison.method methods[42];s[*[:unlock]|[22]|["secret"]|[self]]