At the end of the edittempuser form there is this html:

<div class="pageoverflow">
  <p class="pagetext">Push this user to the FrontEndUsers module:</p>
  <p class="pageinput">
    <select name="m1_pushlive">
<option value="1">Yes</option><option value="0"
selected="selected">No</option>
    </select>
  </p>
</div>"
<div class="pageoverflow">
  <p class="pageinput">
  <input type="hidden" name="m1_user_id" value="301" />
  <input type="hidden" name="m1_group_id" value="0" />
<input class="cms_submit" name="m1_submit" id="m1_submit" value="Submit"
type="submit" />
<input class="cms_submit" name="m1_cancel" id="m1_cancel" value="Cancel"
type="submit" />

  </p>
</div>

Resulting in:

Push this user to the FrontEndUsers module:
Yes/No [dropdown]
"
Submit Cancel [buttons]

Always with that mysterious " before the submit cancel button.