the forms action needs to include the querystring varaible to load the Ask A Question plugin on submit.
change:
<form class="FrostyEscape_Basic" id="Default_FrostyEscape_Basic" name="Default_FrostyEscape_Basic" method="post" action="<?php echo $_SERVER["PHP_SELF"]; ?>">
to:
<form class="FrostyEscape_Basic" id="Default_FrostyEscape_Basic" name="Default_FrostyEscape_Basic" method="post" action="<?php echo htmlentities($_SERVER["PHP_SELF"]); ?><?php echo (isset($_SERVER["QUERY_STRING"]) && $_SERVER["QUERY_STRING"] != "")?"?".htmlentities($_SERVER["QUERY_STRING"]):""; ?>">