Here’s what I’m envisioning. Rundown in progress, let’s use 3b/Home. Throw from F5 to F2. The runner, stops about 30 feet from home, turns inside (maybe on the infield side of grass dirt line) and starts back to 3b. After F5 throws to F2, F5 moves out of R1’s path. F5 is about 15- 20 feet towards home, and in the grass in foul territory. F6 moves to cover 3B.
F2 is chasing R1 back to 3B, on the fair side of the line. R1 veers left, directly at F5 who was nowhere near the runner’s path to 3B, for the sole purpose of making contact to draw an obstruction call. If you’re saying interference is a miss applied rule here, would you go with out of the basepath? (Does F2 running him back to 3B constitute a tag attempt?). I can’t see this action being nothing.