It looked like the disc was too close to the pole to mark with a mini. In that case, is there a way to legally put the same disc in? Could you take an unplayable lie mark directly back in that situation?
I would use 803.02 B as the closest applicable rule:
If a large solid obstacle prevents the player from taking a legal stance behind the marker disc, or from marking a disc above or below the playing surface, the player may mark a new lie immediately behind that obstacle on the line of play.
Obviously, the disc is not below/above the playing surface in this scenario, and you are not prevented from taking a stance, but it does create a precedent that you can mark behind a solid obstacle (the pole)