It was setup when I went to EJ, and I don't see anything on their online portal regarding it. I was hoping someone had experience cancelling this through other means.
It there are regular deposits going to EJ from your bank account, that's a Pre-Authorized Debit. You can cancel it whenever you want via your bank without talking to EJ at all. Some banks let you view and change your PADs via their online portals.
You'd still need to close your account with EJ in an orderly fashion. Perhaps this can be done by way of a transfer initiated from Schwab's end - it depends on the type of account.
ETA: apparently this process works differently in the U.S. than in Canada, and I was describing the Canadian version. In the U.S. you'll need to reach out to EJ, and keep records of your correspondence with them as proof just in case.