Yes, comment it out
I'd really be against this kinda change because:
- it's not exactly a game-breaking bug
- it's not a typo either (except the name which is an easy fix

)
- you don't lose anything because of it (save for maybe some
XP and bragging rights for the tiefling fight

)
Granted that the encounter isn't
proper - but the way to make it proper (make CBCHIMRA a real Chimera) is just too much work

Hence why I volunteer Hoppy to make this
sacrifice fix

If anyone wants to comment the relevant block though... Add comments (/* ... */) to the block in lines 4035 & 4053 in Setup-
CtB.tp2 (valid for v1.13 only) This one...
or create a realistic chimera creature using the correct IA animation
The animation would still need to be assigned by
IA 
Speaking of a real Chimera creature - the Vecna mod has a Chimera too... a real one

And a quick glimpse shows some badass stats and skills

Problem with using that CRE for CBCHIMRA would be that Vecna's Chimera uses custom Vecna-mod items and spells for all of its
Chimera-badassery-ness 
It's not a simple matter of just copying the CRE file and renaming it into the
CtB folder I'm afraid

EDIT: I just realized that the typo fix I posted above wasn't exactly a fix because those creatures were - for all intents and purposes - still just Grizzlies
Edited by Lollorian, 03 July 2012 - 11:56 PM.