the only picture that i can see any hints of flex from is this one:
http://www.oople.com/rc/photos/x6/im...6oople-15.html
but this just seems to me that the shell is mounted unevenly, as you can see at the front on the shock tower - the shell has been placed on crooked.
all but 3 other pictures are static images and i cannot find any signs of flex anywhere?