If there were a back door to the program so to speak it would be picked up by the script kiddies and used to destroy every UBB out there. The code is open source for a reason and that is for others to be able to modify and create new features and things for the community.
If the code was compiled and no longer available to the community in general then the creators would be tasked with every little aspect of bug finding and development alone without others input causing a decline in the software popularity and distribution.
