I think this one is our 'benevolent' manipulator. These walls have periodically gone up, seemingly for little more than to give the price some breathing room, preventing a completely explosive and thus potentially destructive climb and immediate crash scenario. This person probably uses these moments to load up on more coins also. This way they protect their investment while hoping for much more stable, higher prices. Usually these walls are pulled after the breather is complete.
I would agree with you before we breached 2011 high, but now the price has gone from deflagration mode to detonation mode I don't know what to look for...