If it bothers you, you could pull it until it matches with the shorter part. I hate the look of a cut mane. When my mare rubbed a mohawk into her mane, I pulled some and cut the rest, but I made it appear to have been pulled by feathering it. I just gave her a complete mohawk instead of that small patch she had. Its growing out even now.
If you do cut it, just make it look feathered. The reason why I didn't pull the entire mane on my horse and cut the rest was because it was thin to begin with.
I liked the roach look as well.
And those who were seen dancing were thought to be insane by those who could not hear the music