Hi Tobster,
You can fire the PostBackCommand of editor by the code below. editor1 is the ID of CuteEditor in the page.
__doPostBack("editor1$PostBackHandler");
But I suggest you use "ExecCommand" to fire the PostBackCommand event, like below
var editor1=document.getElementById("<%= editor1.ClientID %>");
editor1.ExecCommand("PostBack",false,"myCommand");
"myCommand" is the "e.CommandName" you can get in event PostBackCommand.
Regards,
ken