Trying to edit a course, the line is just stuck in one spot, there's no course marker and I can't move it.

I created a course last week, rode the course on my bike, and now I need to make some edits. There is one particular road that was awful, so I want to move the course away from that road.

I'm trying to grab the line and move it but it's just stuck in one little spot, as if there were a course marker there, but there isn't! Even in Freehand mode, everything moves except that one spot anchored to the road.

Very frustrating and I have no idea how to fix it. The course is too long to start all over, and this spot is right in the middle.