Either way, what has been done, cannot be undone. I watched the video, and there isn't much difference in Summer's feet and the 4 point trim in the video.
She will be fine, I am sure, especially with boots, and if it helps her regain balance, and regain structure she had lost from not having her feet done right, then all the better. Still haven't gotten pics tho. Time is limited for me unfortunately. To me, it didn't look like he took any more off of her walls than he normally does when he rounds her out. I think her legs are stiff from the correction, as well. She is on bute for a couple of days just in case.