Ahaha, thanks doom for finding that vid, but that wasn't it. I should be getting a vid of it up soon from Godathand, I just need our tourney match from him.
Also CO, I guess the best way to describe it...is lets say you're near the edge of the stage, you down throw someone so if they roll away from you, the ledge stops there roll, and at this point u can charge a down smash, during the charge dedede leans back avoiding most get up attacks if u space it right, then no matter which input your opponent does at this point, they will get hit. If they roll to the edge, the difference between that and getting up in pace should be negligible, so regardless they will get hit if they roll away or get up in place. If the get up attack, it should miss if u space it right, and start the d smash charge at the right time, and if they roll towards you, release the smash accordingly