I actually think that Hobart has been lying in wait for ten years (s1) to FINALLY get Don! - and the others were icing on the cake! The lure used was offering the most lucrative, prestigious accounts in McCann's kitty to make them submit and comply (with Don as the BIG fish!)

I remember during "New Business", wasn't Roger pushing for the Nabisco campaign? Some conversation about "it's a cookie"?