"Last time by" confusion

[jicecone]

"A runner acquires a base by touching it OR passing it, as you know. If R2 retreats "past" 3B without touching it, as if on his way to retouch 2B, then he is required to re-acquire it by touching it again as he advances. Whether or not he has "retreated past the base" is a judgment call."

Absolutely correct. He is out on appeal, for not re-touching. Not because of the path he choose ,and that is my point here. And until he re-touches second again and playing action has been complete, can the defense be aware that an infraction of missing the base while returning has been violated by rule.

In 8.2.6H the ball was caught so there is a requirement for the runner to return, by rule. How he gets there is up to him and if it is the wrong way and he misses second by whatever distance, then he is not out because of his path, direction and distance missed, he is out because of an appeal that his path, direction and distance missed caused him to miss the base, which is in violation with 8-2-6L.

In the op the ball was NOT caught and the runner hesitated and took two steps toward second. So what. Had he returned to second, for which his path and direction have no restrictions on (unless played upon), he would be subject to appeal for not re-touching third, in accordance with 8-2-6L. But not untill then.