I wouldn’t worry at all about burning any bridges. Drop a match on that one. No more contact, no phone calls, and definitely no meeting.
Since this is a small horse community, as soon as you are visibly separate from this program, your ears will be filled with tales similar to yours. From other escapees, and friends and family of same.
Everyone knows what scamsters that group is, I promise that. The community doesn’t say things to current students/clients out of politeness. Once you are out of the program the floodgates will open. You’ll find there is a virtual survivors’ group.
I feel fairly certain of that. Don’t let them keep trying to get their claws in you, you owe them nothing, and they have nothing to offer you. You made a wise decision to move on and all you need to do is just keep moving forward.