How can you say the judges followed the law when almost every Florida Statute pertaining to guardians was violated, the ADA was violated, Greer refused to recuse himself several times and Statue 38.10 provides for recusal when requested by a party in a proceeding, and more.
Florida Statutes
http://www.flsenate.gov/Statutes/index.cfm?Mode=View%20Statutes&Submenu=1&Tab=statutes
Your post indicates that you believe a Florida judge is required to recuse himself upon request. That is incorrect, with good reason - do you really think it is a good idea for any litigant to be able to get a new judge just by asking?
Recusal is up to the presiding judge. Failure to recuse is subject to appeal. He was never disqualified, so it's safe to assume that the appeals court found no reason to do so if the Schindlers did indeed appeal Greer's decision. The law was followed, so by definition there was no wrongdoing in this area.