form_state in override missing

Currently when your code alters facebook_status_save_status you are mergging options with

  //Merge the default options.
  $alerts += array(

But then call save_status with just part of the array in last parametar $alerts['facebook_status']

  //Save status in FBSS.
  $status = facebook_status_save_status($recipient, $type, $status_text, $sender, $alerts['facebook_status']);

so then you are missing whole form_state (Array, 9 elements) and maybe this is by purpose but then again some further extension is not capable as you remove some valuable info fo further alters. So I recommend to put

  //Save status in FBSS.
  $status = facebook_status_save_status($recipient, $type, $status_text, $sender, $alerts);