If you had even a little feel of the reality of the situation.. That ball was blooped to shallow left centre, literally 70-80 feet from second base. Jose would have to hover pretty close to second to avoid being doubled up in case the ball was caught. If the ball wasn't caught, combined with Jose's speed (or lack thereof), the probable outcome would have been Jose being forced out at third.
Jose sized up the situation and probably came to realize what i just explained and decided that the ball had a better than 50% of dropping, thus taking off and turn the dropped ball into a run.
If the ball was blooped down the right field line or in right center, Jose would have the luxury of bouncing further towards third base and probably would have waited out the result before making a decision. It wasn't as simple as "you wait till it drops, baseball 101" ********.