I don't really see what the problem is with someone going for a handball in that situation. If you don't touch the ball, you lose. If you do touch the ball, there's still a massive chance that you lose, but at least there's a slight chance that you don't...and in this case, it worked. It's like the common sentiment in American football: there's technically-illegal offensive holding happening on every play, but only the egregious examples get called. It's simply part of the game, as is a baseball player sliding hard into a shortstop in an attempt to break up a double-play, or a hockey defenseman tripping up a forward on a clear breakaway. The goal in any sport is to stop your opponent from scoring by any means necessary...and if you push things too far, you yourself get penalized. That's what happened here, so I'm not really sure where the issue lies.
But on another note, that Ghana miss aside, penalty kicks seem incredibly biased toward the kicker in terms of balance, at least from my inexperienced viewpoint. They're positioned so close to the goal, and the goal itself is so big, that the only chance the goalie has is either to randomly guess the direction of the kick (which still won't help if it's out of his reach) or hope that the kicker horribly screws up (as happened to Ghana). At least in hockey, when a player is awarded a penalty shot, they have to skate down half of the ice with the puck, and the goalie still has a decent chance of stopping the shot if he's reasonably skilled. Maybe if soccer moved penalty shots back out to the second box, goalies would stand a fighting chance, and they wouldn't essentially be gimmes.
