tapping works for me sometimes without d/c, but rarely. if i do finish the match i either d/c before reaching the lobby, or i d/c during the next match. it's fairly easy on my laptop cuz the switch is right in front. there's an alternative to tapping by making a lag switch. instead of actually turning off your modem it slows down the transfered information. so i guess it would be tapping without d/c. i haven't tested it out yet but something tells me i should.
Here's a little tutorial i found on making a lag switch.