I'm assuming mom2pride was talking about the back feet reaching and clipping the front feet, which is what overreaching is all about... it tends to happen when the back toes are long... I didn't listen to it with volume on but usually you can hear a click click click each stride if you get what I mean... it's just the hooves clicking together... It can lead to the horse grazing itself on their heel, or little cuts if its pretty bad. I don't know what crossfiring means though. I didn't pay attention to see if your horse was or not, I saw the comment afterwards, and thought I'd explain the meaning, my apologies if you know it already.
I think it's pretty cool what you're doing... I don't think I have the confidence to say goodbye to my bridle completely... I normally just tie the reins up and ride with my legs... but I do this on a green horse, who sometimes doesn't want to turn/gets confused with what I've asked, so I have the ability to pick up the reins briefly if need be.
♥ Seoul Searchin' for the Lovebug ♥