Well you apparently allowed him to take all of those feats (which as has been posted can never be regained once "violated") - also you allowed him to break the RAW for Vow of Poverty since a cleric's holy symbol is not on the allowed items list - hence he should n't be able to cast most of his clerical spells.
FAQ
Let's see ramifications of some of the vows-
Vow of Poverty - his "share" of treasure must go to a charity or outside organization (it can not be split among the remaining party members)
Vow of nonviolence - any party member within 120 ft of the PC who slays a foe suffers a -1 morale penalty on attack rolls for 1 hour/per level of the vow'd PC
While a great role-playing issue - the vows do have problems on other party members who aren't as into role-playing.
Do perfection bonuses stack? I am not sure on that one - you might want to see if it says that they do, otherwise a lot of those "bonuses" aren't near as high as you may be thinking.
FAQ
How do the equipment restrictions put on a character
by the Vow of Poverty feat affect class-defining items?
(Examples include a cleric’s holy symbol, a wizard’s
familiar, a samurai’s daisho, and a paladin’s mount.)
The Vow of Poverty feat is very specific about the items
that a character can own while gaining the benefits of the feat
(BE 48). It specifically disallows ownership of masterwork or
magic weapons, and thus a samurai who chooses this feat must
give up the possession of his daisho (his pair of masterwork
weapons). A holy symbol does not appear on the list of eligible
items, and thus a strict reading of the feat would disallow the
item.
A familiar, special mount, or animal companion isn’t a
material possession, and thus a character with Vow of Poverty
isn’t restricted from gaining the benefits of such creatures.
Remember that the Vow of Poverty feat, like most of the
material found in BE, is intended for mature campaigns that are
capable of handling difficult role-playing issues—it’s not
intended for most hack-and-slash games. A cleric who must
give up his holy symbol (effectively preventing him from
turning undead or casting any spell that requires a divine focus)
could be a very interesting challenge for a player who’s “done
it all” and wants to try something unusual.
Let's see ramifications of some of the vows-
Vow of Poverty - his "share" of treasure must go to a charity or outside organization (it can not be split among the remaining party members)
Vow of nonviolence - any party member within 120 ft of the PC who slays a foe suffers a -1 morale penalty on attack rolls for 1 hour/per level of the vow'd PC
While a great role-playing issue - the vows do have problems on other party members who aren't as into role-playing.
Do perfection bonuses stack? I am not sure on that one - you might want to see if it says that they do, otherwise a lot of those "bonuses" aren't near as high as you may be thinking.