Bonnie Fuller, executive vice president and chief editorial director of American Media, Inc., has weighed in on Britney Spears’ wild night after the troubled pop tart refused to hand over her son Jayden James to ex-husband Kevin Federline in compliance with their child custody arrangements only to be taken to Cedars-Sinai Medical Center for mental evaluation. “Britney is very likely mentally unstable,” Fuller writes. “Star magazine has had medical experts telling us for almost a year that she is probably bi-polar. When you have mental instability, mixed with drugs and alcohol and a feeling of loss of control, it’s not hard to understand Britney’s desperate measures to regain control of her power in both her personal relationships and her control of the media spotlight. She may not be able to tell her sister and mother face to face to get the heck out of her spotlight, but sadly, she just found another effective way to do it!” Read more.