Running Faye in a different environment than Rails - ruby-on-rails

Question

I'm trying to setup Rails 4.2.1 and Faye with CSRF protection. I used the guide at http://faye.jcoglan.com/security/csrf.html to get everything working.
config/csrf_protection.rb
class CsrfProtection
def incoming(message, request, callback)
session_token = request.session['_csrf_token']
message_token = message['ext'] && message['ext'].delete('csrfToken')
unless session_token == message_token
message['error'] = '401::Access denied'
end
callback.call(message)
end
end
config/application.rb
config.middleware.insert_after ActionDispatch::Session::CookieStore,
Faye::RackAdapter,
:extensions => [CsrfProtection.new],
:mount => '/live',
:timeout => 25
config/unicorn.rb
worker_processes Integer(ENV["WEB_CONCURRENCY"] || 3)
timeout 15
preload_app true
listen 3000, tcp_nopush: false
stderr_path "log/unicorn.stderr.log"
stdout_path "log/unicorn.stdout.log"
before_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn master intercepting TERM and sending myself QUIT instead'
Process.kill 'QUIT', Process.pid
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.connection.disconnect!
end
after_fork do |server, worker|
Signal.trap 'TERM' do
puts 'Unicorn worker intercepting TERM and doing nothing. Wait for master to send QUIT'
end
defined?(ActiveRecord::Base) and
ActiveRecord::Base.establish_connection
end
And I start unicorn with:
bundle exec unicorn -c config/unicorn.rb
I'm getting the following errors in my log file:
Rack::Lint::LintError: Status must be >=100 seen as integer
ThreadError: deadlock; recursive locking
The errors are being caused by Faye running in development mode. Is it possible, using this setup, to tell Faye to run in a production environment while letting the rest of my application run in development mode?