It can mean you value short-term reactions instead of long-term consequences. A better analogy would be flavor: candy tastes delicious, but it's long-term consequences are undesirable. In this case, a flawed morality leads you to conclude that because something registers as 'righteous' (say, slaying all the unbelievers), you should go ahead and do it, without realizing the consequences ("because this made everyone hate us, we have even less ability to slay/convert future infidels")

On another level, one can also realize that values conflict ("I really like the taste of soda, but it makes my stomach upset!") -> ("I really like killing heretics, but isn't murder technically a sin?")

Edit: There's obviously numerous other flaws that can occur (you might not notice that something is "evil" until you've done it and are feeling remorse, to try and more tightly parallel your example). This isn't meant to be comprehensive :)