urgent-phal with three spikes has pest!

[BigRed]

just bought a gorgeous phal on a whim at trader joes today. It has three gorgeous spikes with multiple branches each. Healthy leaves and seemingly healthy roots. I was looking it over and some antenni popped out of the medium. It looks kind of like a brown thing with antenni 8 or so ugly little legs and a tail. Disgusting! Also, it looks like there's little spiders underneath the leaf. Is there any way to avoid a repot? I have a way of killing plants when I repot at in-oppertune times. I feel so grossed out and violated.