For whatever reason, someone in WWE decided that because she did not resemble Michelle McCool, Mickie James was not good enough to be a Diva.
There were reports of personal issues leading to her release, but I tend not to believe most of the rumors that come from the dirtsheets. Mickie is a beautiful woman who is arguably one of the best Divas of all time.
She came into WWE as a Trish Stratus stalker, and eventually became her own powerhouse of popularity. Her good looks and in-ring skills pushed her to the top of the women's division in WWE very quickly.
She is a multi-time Champion who was put into a storyline where she was called fat every week. I will never say she looks like she is need of a meal, but she is nowhere near fat, chubby, chunky or any other word you will find in a thesaurus.
TNA realized this and snatched her up. Now she is the top woman in TNA and has a budding music career. WWE seemed to shy away from her wanting to pursue music, which is stupid.
WWE has a films department, why would they not try their hand at a record label and release Mickie's album along with all the stuff from guys like R-Truth, John Cena and Jericho.
Mickie James is someone I would love to see back in WWE simply because they need her talent.