Perm is not hit by the spider's AoO (rolled 28-5=23). Perm easily holds on to the spider (40 vs. 27 grapple) and moves to 0N15E (or 5N15E), inflicting no damage (I am assuming DR works against grappling. Someone please correct me if I am incorrect.)
The spider bites and claws, missing with claws (best missing roll 32-5-4=23), but biting Perm in the neck (natural 20, 39-5-4=30 to confirm crit) for 25 points of damage. Perm avoids bad effects from the bite (27 Fort save), but can still not use breath or spell-like abilities. Perm has 119 HP remaining.
Round 627
F1 misses F2 because he is blurry. F2 hits F1 for no damage.
F3 moves to 15N10E. Go ahead, Perm.