Broomie, thanks for coming back and letting us know. While I'm sorry the family is upset, I'm relieved that all of this took a relatively short time and that your FIL will be receiving the care he needs.
Having a relative-with-dementia in a care home is a "whole 'nother ball game," as they say here in the States, and please don't hesitate to return with questions, concerns, or advice of your own. My mother's been in the CH for almost nine months and I still feel like I don't know what I'm doing. And of course, someone will have to be in charge of paperwork and administrative issues, and there is his home to deal with, and...well, you get the idea. Lots of people here have experience with these things and are happy to help.
Best wishes for you, your wife, and her family.