the patch closes the connections, but to avoid any problems with winmx it still acts as if the connection was accepted, just closed down straight away
as for if you run both, no idea which would kill the connection first, i would guess both might be doing it, depends where sherwood is being run from (if you run it from the folder with the patch then the patch should also load in front of sherwood, if you load it from elsewhere it is only loaded behind sherwood)