Dale never balked about killing the walkers (in fact, he had a hunting rifle with him at the time of his death; he was simply caught from behind).
He balked at the group deciding to execute a stranger with little to no hesitation.
Which, quite frankly, is a very good thing to balk at.
Still think not offing Randall was a good idea?
His heart wasn’t in integration with the overly moralistic (in this new American landscape) it was surviving to run back to his thugs and plan taking over the farm.
Shane had independently the same idea, cemented once Lori (idiot) gave him hope with the ‘it might be your baby’ speech last night, ep. 11. You saw him plan the death of Glenn, Rick, Daryl, T-Dog, extract the whereabouts of Randall’s camp and coup d’tat the farm.
The characters don’t know until (hopefully now) that they’re ALL infected, and will turn once they die, witness Randall and Shane not bitten.
Everybody can hate on Shane for being a cold-blooded murderer, but he is biologically impelled to protect his baby and the woman carrying it. His position is accurate: Rick has let Lori and Carl run wild while Shane kept them sane and safe, and I’m glad he proved to Rick ‘Lori and Carl will get over you, they’ve done it before’.