Jay could actually take the sand and escape, that would be the best and easiest way.
He wouldn't be required to defeat the monster. Of course, his speed stats were high enough to run away with ease, however, it seemed like he had different plans.
He wanted to defeat the monster probably because of the similar bizarre stats that it showed!
[ Sand Spider ]
Rank: SSS || Max. rank: SSS
Level: 99 || Max. level: 100
HP: 99990/99990 || Max. HP: 99999
MP: 99990/99990 || Max. MP: 99999
Exp: 99900 || Max. Exp: 99999
Atk: 9900 || Max. Atk: 9999
Def: 9900 || Max. Def: 9999
Speed: 8999 || Max. Speed: 9999
Int: 81 || Max. Int: 99
-< Further information cannot be displayed due to host's low level >-
"..."