I haven't checked the video, but I don't give a shit who created it. It only matters what the code does and how it is currently working. Any malicious intentions would've been revealed years ago...
Discussion
Second this
Unless they just waiting for the right time to strike
This would probably need a break of the cryptography used in Bitcoin, which is not impossible, but very unlikely. Bitcoins code has been reviewed by more people than most other software, so some kind of other backdoor would probably have been discovered by now.