the NY Times makes sure to lead with:
Mr. Herbert... had severe head trauma as well as prolonged oxygen deprivation and remained in a coma for two and a half months. ... While Mr. Herbert regained consciousness in 1996, his speech was slurred, he was unable to eat without assistance, he was confined to a bed or a wheelchair and his vision was reduced to a series of blurs. (emphasis added)
Nevertheless, the AP has the truffle quote:
A Buffalo firefighter who apparently suffered brain damage in a 1995 burning roof collapse and has since been virtually silent and nearly blind... (emphasis added)
"It's almost unheard of after 10 years," [Dr. Rose Lynn Sherr of New York University Medical Center] said, "but sometimes things do happen and people suddenly improve and we don't understand why."In other words, miracles do happen.