Realizing this, he shook his head slightly and stared down at his chained feet as he stood before the judge during his first court appearance.
Cuillard faces one count of murder, a first-degree felony, which carries up to a life sentence in prison.
He will next appear before Judge Charlene Barlow in a West Jordan courtroom on July 22, according to court documents.
Cuillard was arrested on June 20 after police found Arla "Caroline" Christensen, 85, dead in her bedroom, and Cuillard still in the house with blood on his pants and shirt. On the bed was a metal rod later identified as a golf club with a missing head.
Prosecutors allege Cuillard killed Christensen, his wife's grandmother, at the house, 10164 S. Bannor Hill Road (1985 East), by beating her with the golf club.
The defendant's wife, Angela Cuillard, told officers her husband was having a psychotic episode and that Cuillard has a history of "severe mental illness" and had not been sleeping in the days leading up to the alleged crime.
Christensen had moved in with her granddaughter sometime during the past year due to health problems, Sandy police Sgt. Jon Arnold said. She previously lived in Mount Pleasant.
In an interview with Sandy police, Cuillard admitted the blood on his clothing was "grandma's," according to jail documents.
He also told police that "he had to do what he did to make things better," the jail document says. "In his mind, had he not done it, things would have been worse."