Afraid I cannot offer much in terms of resources but I can tell you that I have opened one up to do some repair work.  I dont remember it being any more difficult then other remotes I have opened.  URC makes them pretty tight so use plastic tools as much as possible.  I think I started near the USB port (but did not pry on it directly) as a starting point to separate the case.  And very slowly worked my way around.

Again, sorry I cant offer more info.