Scoring Question

[bigbertha]

While watching the Reds game I came across an interesting situation. Johnny Cueto was batting while a runner(Janish) was on second. 0-2 count with 0 outs. Cueto squared to bunt causing Pujols and Thurston to come in to field the bunt. Cueto pulls the bat back and swings sending a ground ball to the charging Pujols, who fields and throws to the SS Greene who is covering third and tags out the runner(Janish). While the Cardinals weren't paying attention Cueto decided to take second base. While running there the Cardinals make an attempt to run and cover the base. What would the scoring on this play be? Would it be a stolen base because they made an attempt to throw him out or would it be a fielder's choice because he went to second on indifference to the runner? Thanks.