TMJ Night Splint

I recently got fitted for an upper night time mouth splint and a lower daytime splint. After using both for roughly a month, I went in and they put a "pivot" on my upper night time splint. This was no more than a hard ball that is placed on the splint where my bottom left molar would hit it. This is the only point of contact when I close my mouth and supposedly "75% of patients see an improvement after 2-3 days" from this. After 3 weeks, this "pivot" is then removed. Has anyone ever heard of anything like this?