Any time something like this happens, it is just so strange. To do it at all has its level of warped. But, to not be able to resist doing it somewhere that you know would have consequences to your career, you really have to have a problem. I really don't know how bad any of this is. I'm sure if you wanted child porn it is easy to find online. But, it had to come from somewhere, and if you don't have that sense of concern or those involved (when you are father yourself, no less), then you really do have a problem. Sounds like it may be one he can't correct on his own.
I hate stories like this.