I tried this option the problem is that the script shield Blocks one of my applications that I use for business purposes. I installed the Trial and did a custom install and ran without the script shield and everything would work without a problem. When I downloaded the link and installed the managed version directly on my PC I do not get an option for a custom install.
Managed client gets its settings from the group it belongs to at the "console". You'll have to create a new group at SBC console, disable Behavioral shield in settings of the group and move the computer to this group (you can disable BS in Default group too, of course.
Or if you really want to uninstall the BS then you'll have to run "Change" option directly on the computer with the client. And disable the BS component manually.
hth