Can you explain, in simple terms, the judiciary system of Alabama that allows Roy Moore to be removed as Chief Justice of the Alabama Supreme Court by the Alabama Court of the Judiciary in 2003, and yet run for, and regain, the Chief Justice position 10 years later in 2012?

In case you need a refresher:
“During Moore’s first term as Chief Justice of the Alabama Supreme Court, he refused to remove a monument of the Ten Commandments (which he had commissioned) from the Alabama Judicial Building despite orders to do so from a federal judge. On November 13, 2003, the Alabama Court of the Judiciary unanimously removed Moore from his post as Chief Justice.”

Same-sex marriage rolls on in Mobile without Roy Moore

Politifact gives Judge Roy Moore a ‘half-true’ on gay marriage claims

Chief Justice Roy Moore’s defiance to federal government ‘places Alabama a step backwards,’ says Montgomery probate judge

I linked to sources within the state of Alabama, since that is where the conflict is centered.