dynamic-jails hook array_search error

//hooks/dynamic-jails line 46:
case "unbanip" :
      exec("$FC status $jail | grep 'IP list:' | cut -f2", $out2);
      if(is_array($out2)){
         $out2 = implode($out2);
      }
      if(!empty($out2) && array_search($ip, $out2) !== false){

After imploding $out2, it is no longer an array, and array_search fails