Sounds like they have that stuff turned off for a reason, and it probably shouldnt be messed with. Companies do things like this for compliance reasons, and you trying to hack it could expose your company to non-compliance.
I am the BES Admin for an engineering firm of 4500 employees (1100 BB Users). The things we restrict are restricted for a reason. I found a guy that tried applying a blank policy as instructed above, so I just turned up the Policy Resend time to every 12 hours. When he tried to do it again, he was removed from the BES, and excluded for 6 months. His supervisor wrote him up and told the user that if he were to do it again, he would be terminated.
At the end of the day, you need to ask yourself if using a camera and media card are worth all the troubles and possible consequences. Then you make the decision. Always remember that if the company bought it for you, its theirs, and they can do whatever they want to it.
If you simply cant live under those restrictions, get your own Curve, use BIS, and take pics til you're blue in the face