Nope, you're not alone. I find myself tearing up all the time. At times when it doesn't make sense or it just doesn't seem to fit. I think on some level, in regards to the wrestling moment, you're experiencing the feelings of loss of relationships that have been message up due to abuse and that scene, although staged, brings out those feelings in you, which like many of us, hurts so deeply we can't help by tear up.
At least I know that's how it is for me allot. My T tells me to really focus on what I'm feeling at different times, and if I'm in one of those moments and take the time to focus and try to figure out what I'm feeling, I can find the root cause, and sometimes it really has nothing to do with what I'm watching or reading or listening to, but somewhere it connects to those deep seeded feelings.
Don't be afraid to being to open up and feel. It hurts and there will be times you'll want to run away screaming and wishing you'd never started down the road of dealing with things, but believe me, I've only been at this two months or so, and it's already been well well worth it!!!