I see by all the responses that people haven't brought up some of the points that I am here to make. Good thing I asked first. If I hadn't, instead of people biting my head off for not using Google when I already no damn well all these rumors myself, you would be biting my head off for "No Duh! We already knew that!"
When I ask for verification, I am wondering if someone, not necessarily Mickie herself, did an interview and acknowledged all that has been reported. Guess not.
Let me just start with the whole bus thing. No verification? Fine. You can still accept that as truth if you want. But do you people remember a certain backstage segment with Essa Rios and Kurt Angle? Angle made Essa look worthless by acting surprised Essa still worked there, or something to that effect. Essa Rios got released a short time later. Mickie James got the "Essa Rios" treatment. Funny thing, it happened the week BEFORE the European tours reports say was the last straw for her. On the Smackdown before that, the same night Jack Swagger won the World title, Swagger had a backstage segment where he passed by Mickie, Tony Atlas, Jesse, and Shelton Benjamin. He only spoke to Shelton, saying something along the same lines Angle said to Essa Rios. In the weeks of Spring Cleaning that followed, all 4 people Swagger went by got released. 4 out of 4 may just seem as a coincidence, but when you combine it with the fact that the WWE has done this kind of thing before, it really is not a coincidence in my book. Mickie was on the list to be released before any European tour where she may or may not have been late for a bus.
Oh, and if you doubt that this segment occurred, you don't have to believe me. Use your precious Google.