OBS at home plate (again!)

[Andy]

It appears to me that the first and second pictures may both be of the same play, taken from different angles.

As mcrowder said, it's very difficult to judge obstruction from still pictures since you need to see what the runner did prior to getting to the point of the picture being snapped.

Good illustration of a player blocking a base without the ball, but that is only half the requirement for an obstruction call.