First off, is it just me or did the TARDIS in siege mode look an awful lot like the Pandorica?
Secondly: it took all episode to figure out that the solution was to point the magic Sonic Wand at the problem and make it go away? Usually that's the first thing you try.
This episode's villain was weaksauce hiding behind good visuals. The best part of the episode was the line at the end: 'you made a great Doctor, but it had nothing to do with goodness.'