It certainly seemed so. Like Shane, Glenn was driven by anger, recklessness and emotion. Also like Shane, he didn't think about the long term consequences of his decisions. I like the scenes where Glenn "took charge" because it's a glimpse of what it'd be like if he ran things.

But his decisions to invade Woodbury with just him and Michonne, and clear the tombs by himself (which left everyone else to get attacked by the Governor) were just plain bad.

Another reason why I say that maybe Glenn's "leadership" was inspired by Shane is because Glenn has taken bits and pieces of people he was close to at one time or another. Dale, Hershel, Andrea, Tyreese, and Rick have inspired Glenn in multiple ways, and I don't see why Glenn wouldn't learn things from Shane, too. I honestly think that when Glenn briefly took leadership, he was taking a page out of Shane's playbook, similar to Shane's "Barnageddon" moment when he executed the walkers with no thought of the consequences.

Thoughts?