Was the trucker in the wrong, or was I?

So I was on I35 driving through Wichita. In Wichita proper there are 6 lanes (3 on each side.) There are entrances and exits every mile. So I leave the far right lane free for people who are entering and exiting. Saves me from having to change lanes every minute or two to let people in, and I don’t have to worry about people trying to get in around me to exit.
So I was cruising in the center lane, which left the far left lane open for faster people.
Well, this trucker got right up on me and I could not figure out why he didn’t pull to the left and go around. This was the middle of the day, not rush hour, and the passing lane was, for the most part, free and clear. I had made sure there was plenty of room for him to pull back in in front of me too.
Then a I saw that this guy who happened to be beside me on the right at that moment, was going to have to change lanes to let this guy in who was merging in, because he had no where else to go, so I moved into the far left lane to let everyone do what they needed to do. When I did, the trucker speed up and proceeded to pass me on the right, causing a bit of panic for everyone but me cause I was safe in my empty far left lane while he had people trying to change lanes and merge all around him.

Now why the hell did he do that? Did I do something wrong? Was I supposed to move into the passing lane so he could pass on the right? It just made no sense, and I’m always disappointed when truckers do stuff like that, which isn’t very often.
Outside of Wichita it narrows down to a 4 lane (two on each side,) with entrances and exits miles apart. At that point I cruise in the right lane because there isn’t the constant pressure to change lanes and adjust like there is in Wichita proper.