Looking at Baldy's review, it seems like the DT's ARE mostly doing their jobs of fighting double teams, but the LB's are slow to process and fill and/or can't get off blocks.
BALL WAS TIPPED as well, its moot debate. we don't know where the ball would have gone, if not tipped. At least closer to Lamb then the DB.. Maybe it broken up or lamb can stop and get it..