I agree with Stumpak. I think Burnitz may get a few more homers in Colorado, but by the end of the year they should only prove to be a small percentage of all your home runs. It's just not worth the risk to your BA.
It looks like you have a fair amount of power. You might try to deal him to a believer for someone you need, for backup or a cat. you feel your lacking or for someone with a lot of upside. Or just drop him and pick up a sleeper to hold on to like Gerut or something.
"There's something kind of 'eee-yew' about a boy who doesn't like baseball." Foghorn Leghorn