My first thought was that I may have to come out of retirement.
Amelie has gone? Since when? Is this breaking news or something? What a horrible way to find out.
I only just found out when I saw the news headlines, but I have a feeling this was probably instigated by Amelie because I know she wasn't happy about Andy's on-court behaviour, and also maybe she just finds it too much now that she has a baby, plus being captain of the Fed Cup.
Sounds like in the last few months Andy has been trying to rethink the technical aspects of his game so is searching from best sources and not having that in one coach nor in the team. Perhaps now he thinks that the need is for more basic support of looking at opponents for him etc and someone like Jamie D, who he seems to trust, might be all he needs? He has always been someone who sorts a his own tactics a lot of the time but it is always wise to have what a coach can bring to help him see what he wants to do?
Jamie D sounds OK to me, provided that's what they both want.