I'm guessing no one is looking at my old post so I figured I would try a new one. http://forums.roku.com/viewtopic.php?f=34&t=41082&start=0 Could the referenced link be a bug. and if so does any...
From the linked thread it sounds like you have a work-around as well....
Like the theEndless said, use a HEAD request as a workaround for looking at responses without following the redirect. There is not a good workaround for using the same technique on a POST (short of using the new v3.0 roStreamSocket component to do it yourself).