The top teams, when faced with a 'parked bus' tactic, usually keep calm and keep the ball, moving it around and making the opposition chase around.
This tires the defending team because it really is harder work when playing without the ball than playing with it.
The top teams press high up the pitch to get the ball back as quickly as possible, when the opposition do have the ball.
Man Utd have done this this season on several occasions very successfully, scoring in the last 10 minutes a number of times.
This is the way we should be when faced with a 10 man defence.
One thing that should be noted is, that the central defence and holding midfielder must stay in position, unless a corner is won and then the usual cover is in place.
It is for games like this that the top teams play a 3-man back line.