Sounds like an interesting move for him - I wonder what his heritage is and if it is Scandinavian? It might be a situation where he sort of backed into it by being in the right place at the right time - he is just acting as 'interim coach' so it isn't necessarily a long term situation and a lot of foreign teams have US coaches - much larger pool of talent and depth of experience in the US than anywhere else.
Also sounds like he did a lot of reflection during his 4 months away from work. He probably hadn't taken more than a few weeks away from a job since college.