Easiest way to do this is with two controllers. I find the easiest way to get a slider in the 5 point zone is with a 7 - 8.5 power flick straight down the middle. The slider will bounce straight back off the back wall and land on the 5 point zone.
Do this with a player 2 slider and then knock them in to the green 'Sorry' zone. Don't hit them too hard or they'll bounce back in to the scoring zone.