Was this massage inappropriate?

I got a massage a couple weeks ago by a male massage therapist. I’m a female in my 20s. I told him my glutes needed some attention because they are sore from working out. He worked on them as normal and then he had me flip on my back. I was laying flat on my back with the sheet over me. He stood at the head of the massage table (directly behind my head) and reached under the sheet under my back and down to my glutes. He could barely reach them, but massaged them up and down. Since it was tough for him to reach my glutes from this angle, my face was turned up and back VERY firmly pressing on his stomach. This out my back also in a slight arching position. This went on for about a couple minutes. My face was SO firmly pressed against his stomach, it seemed odd to me

Does this seem a bit selfishly sexual on his end? Is this positioning good for the glutes for any reason?