Bedlam (anag) (6)
(Other definitions for blamed that I've seen before include "Assigned responsibility for fault to (someone)" , "Attribute responsibility to" , "Censured" , "Held responsible for bedlam" , "Condemned" .)
(Other definitions for ambled that I've seen before include "Walked lazily along - so blamed" , "Blamed (anag.)" , "'Walked leisurely, moseyed (6)'" , "Walked casually" , "Wandered about aimlessly" .)