Perhaps refuted is a bit strong of a word for me to use! I think there is growing evidence that it is related to other factors than overall weight loss but that probably contributes too.
It's hard because I don't have academic access to journals right now as you know most of them are behind expensive paywalls! I think the best people to ask would be your endocrinologist colleagues - they can do a Medline search or if the hospital has a good library with a librarian they can do it for them to look for the latest reviews.
The other good source of information is bariatric surgeons they tend to be up to date with the latest research - that is how I found out about this information myself initially and I've read various supporting articles on Medscape etc.
Further in discussions I have had with my own endocrinologist who works directly as part of the bariatric team he is definitely of the opinion that weight loss is not the main cause of resolution. I might ask him for more information at my next appointment.