Unfortunately - probably about right there Woodsie....do agree it's impossable to simply turn that tap off, as opportunities will no doubt open up there at stages.
In truth - Iv'e always been of the belief the best way to minimise this issue, is to really dominate and control the speed in the middle as to take time away from these classy Latrell, Walker types who if given to much time, will execute far higher....this is probably a more realistic expectation
Many simply "blame" the outside men too often, whereas much of the damage is in fact - The middle and ruck area and simply - Perfectly executed plays from quality attack....