Hello Frank,

fk> 1. What is the pali word for DISENCHANTMENT/REVULSION?

Most probably 'nibbindati': 'to get wearied of, to have enough of, be
satiated, turn away from, to be disgusted with' according to PED.

fk> 2. Why did B. Bodhi change his mind and use Revulsion
fk> now instead?

I think it is a common stance in modern Sri Lankan Buddhism, my
impression is that they put an emphasis on revulsion.

Probably it is somewhat controversial since disgust and lust are twin
brothers, with ignorance as a sister.

fk> 3. What do you guys think? Which english term do you
fk> prefer?

I would prefer 'grows disenchanted', as Thanissaro Bhikkhu translates:
http://www.accesstoinsight.org/canon/majjhima/mn148.html

Dimitry