Several petitions to discontinue guardianship WERE filed. They were denied and/or not ruled on in a timely manner (depending on the petition). Many causes of action were cited, including his failure to provide care and therapy as recommended by the doctors, failure to provide annual reports/plans of care (required by Florida law), failure to provide annual financials (required by Florida law), conflict of interest due to his relationship, etc.
Don't know whether it was the fault of the Schindler attorneys at the time, or the court's fault, but MS remained as guardian.
Courts are reluctant to overrule other courts. Michael was Terri's official husband.
We need to take a hard look at these laws. Terri's parents and siblings were (IMO) obviously better qualified for that role.