Now, after the buyer pays the fee, the seller should assign the escrow agent as a manager and the buyer as a communications manager.
We made it to speed up the deal twice for you. From now on when the buyer pays to the seller - we can transfer a primary ownership rights to the buyer immediately, instead of waiting another week (since 7 days is the minimum amount of time required in order to assign the new primary owner in the control panel).
Communications managers have zero permission to manage the youtube channel, only ever functioned for Google+ Pages. At this point the buyer cant harm the channel, as he is not allowed to manage the channel, so the seller can sleep well and not be afraid.