In the Breaking Bad episode "Breakage" (S02E05) one of Jesse's dealers gets robbed by some junkies. When Walt comes to know this, he gives Jesse a gun and urges him to "handle it" in order for them not to lose their respect on the streets (which then leads to Jesse's unpleasant experiences with a junkie family and an ATM). But at the beginning of "Negro y Azul" (S02E07) Walt suddenly changes his mind and after not having reached Jesse for quite some time just leaves him a message saying
Oh and by the way, that thing we talked about, when I said "handle it". Well, don't, just let it go.
But why did he suddenly change his mind about this matter? Was he simply feeling a bit of remorse, not being the hardened gangster yet (though, he was quite determined when he persuaded Jesse to handle it), or is there more to it? Or does it have something to do with the stupid-ass student he justed talked to right before making this call (maybe he didn't have confidence in Jesse anymore and thought he'd screw it up)?