Harry had abounds a split second to get out of the situation he was in. So as most would do in said situation he did something stupid. He created a ball of fire to send down by his feet to give him a push up. This was dumb since he couldnt control anyother element well other then air. Just as it was looking good, like it just might work, it blow up. Sending Harry back away from where he would have landed. On the bright side he did get away from Yasuri's blade. On the bad side he was dazed and couldnt stand. All harry could do right now is hope Yasuri was too.