Otoplasty Rebound - is This Proceedure Normal to Hold the Tips Back?

I had otoplasty 5 weeks ago. Last week both my ear tips popped back out overnight. On one fold internal stitch popped out through the skin, on the ear the fold is almost gone. I went to my surgeon and he suggested that we do a small procedure on the tips only in which he will weaken the cartilage and use dissolvable external stitches to recreate the fold to hold the tips back. He doesnt want to go through the back of the ear in fear of opening other internal stitches which holds the ear back.