It should be noted that about six years ago Tendler boasted in one of his YU courses that he reported a mohel to the government. YU put an audio of his course on its website, as it generally does for all those courses. After it became widely known, he quickly had YU delete that audio of his course with his incriminating statement. (By now copies of the audio is available online, outside of the YU site.)
I also strongly suspect he is responsible for being at least partially responsible for instigating the NYC DOHMH to initiate these proceedings this year that resulted in them regulating MBP.