It's possible that the station that airs TPC in your area is owned by a company that runs a CBS/NBC/ABC station. Sometimes if there's something preempting programming on one of these station, they'll put it on the secondary station because they get more ad money for it. In your case, it sounds like Ellen was preempted and since they surely get more money for airing Ellen than TPC they decided to bump TPC.
The road rage case was just...wow. I have no doubt the defendant chased her down, went up to her car and generally acted like a loon. But I'm also sure she and her son were not the innocent little lambs as they claimed either. You know the birds were flipping and f bombs were dropping on both sides. And I know it had to be a scary experience to have this guy coming at you but she still came off as a drama queen. And really, if she was so scared of this guy why was she dragging him into court to further rehash it and antagonize him, Same thing as escalating things on the road; sometimes you just cut your losses and back away from the crazy. I did love the plaintiff's reaction when Judge MM straight up told her "I have no sympathy for you." She couldn't believe the judge didn't want to give her a hug and $5,000 for all she had suffered. They were both crazy for agreeing to air this disaster out on TV..