How so?
My mother's dad got himself a job as a janitor in an elementary school just so he could molest children. And he did.
The way to give a child safety isn't by putting him inside a locked cage. It's educating yourself and your child about what kind of sh1t goes on out in the real world. Unfortunately, society is leaning toward locking the children in a cage. Many elementary schools have eliminated things like playing tag, dodgeball, and running because a child might trip, fall, and hurt himself.
http://abcnews.go.com/WNT/story?id=2606557&page=1
Now, back to the original post. Why would a parent knowingly leave their child with a untrustworthy person? Unless Pakwah's ex-gf is an alcoholic crack wh0re, she likely wants her child to be safe just like Pakwah does, so she'll get a babysitter she trusts. But if she IS an alcoholic crack wh0re, he should be going for full custody.