That was a pretty fun episode. Nice to see Maybourne again, he's come a long way, hasn't he? I especially liked how, when he told the village the truth, they pointed out all the things he had done to make their lifestyle better. And then you find out he has several wives, so he's still something of a heel.
You know, people who have to wait to see the new eps in order (and haven't been reading spoilers) are going to get an interesting look at things. SG-1 just happens to find a Puddle Jumper in one episode, then, two weeks later, Atlantis tells where it came from. And things will tie together further late this season. Who says TPTB are just slogging along?
Regarding the two drones, remember that these are smart, tough little weapons. In 'Lost City', and again in 'New Order' we say how they can punch through objects and continue on, until they find something they want to blow up on/in. They're also manuverable enough, at low speeds, to circle an individual. I don't think it's out of the question that those things could have punched right through to the Ha'tak's reactors and blown them apart. But that's just me.