That doesn't look like a stabilizer issue to me. It looks like something with the tension as Coyote Quilts mentioned. I've also had a problem that looked like that when my bobbin wasn't just right in the case. I rarely have trouble with my machine but when I do, it is usually how I have loaded the bobbin- you'd think I'd get it.
I sure hope you are able to get this worked out. It can be so frustrating. Brother dealers and support are great.