The Chiefs could have taken care of that with simple adjustments. They want to put so many big men at the line? Fine, that means you bring up more men to the line and believe in your cover guys.
It was pretty clear to me after watching that the Chiefs really weren't playing to win that game and were trying to hide the majority of what they're going to show the Ravens.
As far as the problems they state about Cassel. He's not great at throwing on the run. He's great at scrambling around, but he HAS to set his feet to be accurate. All up to the big boys up front.