Nearly every pitcher I've seen that could be described a "pie thrower" takes the ball out of his glove incorrectly. When the hands break the throwing hand is not on top of the ball. This has a tendency to spoil everything that comes later. And at every position, not just pitching.
The hand needs to be on top of the ball at hand break or the transfer. Perhaps this is what "infopimp" is referring to? Most players do this naturally, but not all!