Jamie Aguiar also claimed that she and her husband had been supporting his mother for the past several years, including providing her with a home and a car, giving her the use of a credit card and even putting Ellen Aguiar's fiance on the payroll.
"This is irrelevant to the appointment of a conservator," Baron said. "She worked for Guma. She ran the whole Israel show, including the sports teams and the real estate."
"Although Ellen Aguiar purports to have the best interest of her grandchildren at heart, the record will reveal that her actions consistently drove a wedge between the family by seemingly flaming the fumes of Guma Aguiar's paranoia," the document said.
Ellen Aguiar's filing told a very different story.
Her court documents said that Guma Aguiar's property is in "imminent danger" of being "wasted, misappropriated, or lost" by Jamie Aguiar unless immediate action is taken to preserve the status quo.
The document alleged that Jamie Aguiar fired Aguiar & Associates' CFO "without any reason or justification whatsoever and without a majority vote for the remaining officers to do so."
It also claimed that his wife contacted the chairman of the board of Hapoel Jerusalem, a basketball team owned by Guma Aguiar, and instructed him to take no further action with the team, including paying the salaries of employees.
"The Absentee's Wife has taken such actions without court order, without power of attorney, and without any other authority to do so," the document states.
The court document was an amended version of a document filed last week by Ellen Aguiar with the Broward County Circuit Court in which she filed to become the conservator or temporary guardian of Aguiar's estate. Following backlash from her daughter-in-law, Aguiar filed for money management company Northern Trust to gain control.
"The only person that Guma trusted at the end was his mother," Baron said.
The devoutly Jewish Aguiar is known for being the main sponsor for an elite Israeli soccer team and making multi-million dollar charitable gifts to Jewish organizations, he has also had a number of personal transgressions.
He has been arrested several times, including for drug possession and driving under the influence, according to court records. He is also currently on probation after pleading no contest to domestic violence charges.
In 2010, he was involuntarily admitted to an Israeli psychiatric hospital after his erratic behavior.
Aguiar made his fortune in 2006 when he and his uncle Thomas Kaplan sold their Texas-based energy company for a reported $2.5 billion. The two have been in a messy legal battle since 2009 over the division of the money.
They went on to say that he was the victim of what amounted to "psychological terrorism."
In 2011, he was appointed an emergency guardian after his wife and mother petitioned a Miami-Dade judge for one.
The couple has four children, the youngest of whom is 10 months old. They also have a 3-year-old son, a 4-year-old daughter and a 7-year-old son.
A hearing on Thursday at the Broward County court has been scheduled to appoint conservatorship.