Simple alternatives to uploading the Brony D&D episodes as is:
Don't upload them.
Create a highlight reel/montage of the important plot points and cool/funny actions by the other players.
Edit out Zak's parts and put a piece of text summarizing what the character did in their place.
Have someone else voice the parts Zak did and edit them into the video in the proper places.
Point 1 is the easiest solution that helps the victims the most, and they are the ones that are of the highest priority. You should be worrying about making them comfortable like you said you would, @joshscorcher .
@drwolf001 , this is on your channel. I expected better from you. You like to present yourself as the calmest, most reasonable 'therapist' in the community, but you failed to do the thing that would be the most therapeutic for the victims: removing the predator from everything. You're not helping until you do that.