the "complete possession" portion of that interpretation is misleading and poorly worded. a better wording woud include something about the impetus of the ball similar to the pitched ball going out of play. i did not see it live, and am only working on the video clip you linked to. it looks like Laz, the 1BU, signals ground rule double by holding up 2 fingers. if both runs were allowed to score, which they did in this case, then i bet there was a conference that changed the ground rule double call to a time of deflection award. basically, what the interp you cited is trying to say is that if a ball is hit down the line and it hits off the players glove and immediately deflects into the stands, it will be penalized as a time of pitch award. in this case, it appears that because the ball was juggled/bobbled so many times they changed it to a time of deflection award because the ball did not immediately go out of play due to the original deflection.
what is confusing me about it is how the b/r ended up at 2B. if they ruled it a ground rule double, then only 1 run should have scored, and the answer to the title of this thread would be, "looks like it." if they didn't rule it a g/r double, then they must have judged that R1 was past 2B at the time of deflection and the b/r was not past 1B at the time of deflection, which would mean score, score, second. unfortunately i do not know any of the guys on the crew well enough to ask them about it, so we will have to continue to speculate. 🙂
edited because the first draft was hard to read and i have more time now to work on it.