It's absurd, for a whole host of reasons. One, remotely controlled from where? Two, the planes were taken over by hijackers, as the passengers themselves reported on their phones. Three, it would entail a conspiracy of ludicrous proportions. Four, there is no evidence of any kind to support it. Five, the official statement of the government is that it was hijackers. Six, you can't remotely control a plane with that degree of precision. Seven, why would they be remotely controlled, when it would be simpler and easier to hijack them and fly them manually.

Your problem, like so many other people these days, is that you lack the background knowledge, education and intelligence to apply common sense to these kinds of questions. As a consequence you arrive at absurd conclusions. Take the comedian, Owen Benjamin. He seriously believes the world is flat, and that America never put men on the moon. He believes these things, and he is not conscious of how absurd he sounds, because he just doesn't have the background knowledge to realize it. He is constantly patting himself on the back for his "high IQ" and he believed utter absurdities.