I think you may be correct. It is quite a flip-flop to go from this:
"Trayvon Martin’s mom says she thinks his killing was an ‘accident’
Trayvon Martin’s mother Sybrina Fulton told the TODAY show Thursday that she believes her son’s fatal shooting by George Zimmerman was an accident.
“I believe it was an accident, I believe that it just got out of control and he couldn’t turn the clock back," she said. “I would ask him, ‘Did he know that that was a minor, that that was a teenager and that he did not have a weapon?’” she added.”…
to this:
“George Zimmerman stalked my son and murdered him in cold blood.”
and this:
“When I referenced the word ‘accident’ today with regard to Trayvon’s death, in NO way did I mean the shooting was an accident,” Fulton said.
“My son was profiled, followed and murdered by George Zimmerman, and there was nothing accidental about that,” she said, clarifying that the “accident” was that Martin and Zimmerman ever crossed paths.
I’m thinking maybe the prosecution influenced her to retract her accident statement since the affidavit contends Zimmerman provoked the confrontation with Martin.