Just an update: I transplanted them 13 days ago using both recommendations. First I slid the root ball from the pot by turning it upside down and gently pushing on it from a hole in the bottom of the pot. Once the root ball was free I dunked the root ball into a bucket several times until all the potting soil dissolved. From there I could unspool the taproots from each other which were thick enough to where none of the sprouts were damaged and all are growing well. Pictures from a week after transplant: