Delayed so as not to contribute to the theater criticism.
Basically, Romney's a big liar and Obama needs to have a better defense of liberalism, even if he doesn't believe it. I don't think Lehrer was very good, but I didn't think he was as bad as some did. Just letting them talk has merits as a moderator strategy. While a bit feeble, his attempts to actually tease out genuine differences between the candidates aimed in the right direction.
Obama has plenty of room to highlight contrasts without wrapping his arms around the corpse of Marx. It shouldn't be that hard.