I did not mention in the original write up, but the Thieves in the party DID pick the little munchkins pockets, just before the FORGET spell, while they were under the effects of the Enthrall spell.
The Hacklopaedia of Beasts said this monster gets Treasure Tables J through M, meaning the party got, (range in parenthesis times 16):
112 Copper (3-24)
112 Silver (3-18)
84 Electrum (3-12)
98 Gold (2-8)
140 Hard Silver (3-18)
98 Platinum (2-12)
There were 16 of these critters, hence the high result.