Ability to list multiple orgs for end-users

We have multiple Organisations enabled for our end-users, so we can represent different teams within one company.  Soemtimes we have users associated to many teams and need to move any incorrect teams, (remove link to Organisation).  It would be useful to export the orgs associated with a user so these can be checked.

In meantime, we are looking at listing out all the members of the different Organisations, (teams), to do cross checking, via the API.