They were focused on criminal intent. They were also told that Ward was under the influence of marijuana at the time of the incident to the point he was impaired.
"The grand jury considered two charges against Stewart for possible indictment, Tantillo said: “Manslaughter in the second degree and criminally negligent homicide. In New York state, it takes 12 or more votes of 23 grand jurors to return (indictment on) those charges. So while I can’t tell you what their votes were, you obviously can deduce the fact there were not 12 votes for either charge.”
Later, Tantillo added of the grand jury, “Their job was to determine whether or not, based upon all the evidence they heard, all the testimony they heard, whether there was reasonable cause to believe Tony Stewart had committed a crime, or not. Obviously, their vote was that they did not reach that finding.”
“However, I am sure from their deliberations and discussions, that the fact that Kevin Ward was observed running basically down two-thirds of the track into a hot track, and into the middle of other cars that were racing, played a big, big factor in their decision.”
Sure appears Tantillo , District Attorney, was unbiased in his dealings with the grand jury.