my apologies it appears that at about the same time as Coinmarketcap had problems there was the equivalent of a bank run on Irom Finances token Titan. They put out a blog about it here
I think they were using fractional banking and claiming to be a stablecoin but as I posted before I really new nothing about it until your post. If they were only partly collateralised anyone who uses any stable coin needs to look closely at the finances behind the coin . Tether has long been accused of being dodgy and I for one regard their using snapshots of their finances rather than full account reporting as a non event