Excellent points — this is not just some “crazy lone wolf” — this was most likely funded and incited by some Islamic terrorists — some articles mention that there was a lot of terrorist chatter prior to this attack and that the Muslim terrorist organizations were encouraging and helping such lone wolf attacks, which are still terrorist attacks.
As in Mumbai, the handler, gently talked them through the massacre in the hotel and in the mall, I would not doubt there was someone instructing, encouraging, and witnessing.
A construction worker told CNN that he saw the gunman cross the street after he shot the reservist corporal and then commandeer a car, throwing the motorist out into the street. And then made he made his way towards Center Block. This was, I think East Block. ( I heard this from a Canadian reporter earlier too.)
The construction worker then sought cover on the other side of the wall, that did not belong to parliament, when he saw another man, with a scarf, similar to the gunman, white with blue and black patterns, bundled up with his skin and hair covered, watching what was going on. But while everyone else was freaking out, he looked on calmly. And then he ran off in the direction of the parliament.