oauth_fix.rb

#place this inside config/initializers/

require 'oauth/request_proxy/typhoeus_request'

module OAuthFix
  def self.included(base)
    base.send :include, InstanceMethods
    
    base.module_eval %q{
      alias_method :old_post_parameters, :post_parameters
      alias_method :post_parameters, :fixed_post_parameters
    }
  end
  
  module InstanceMethods
    def fixed_post_parameters
      if(method == 'POST')
        request.params || {}
      else
        {}
      end      
    end
  end
end

OAuth::RequestProxy::Typhoeus::Request.send :include, OAuthFix