Missed 1B - double 1B appeal?

[Dakota]

Wasn't this, or a play very much like it, discussed here a year or so ago? As I recall, the discussion divided on two points:

1) Safe, because you cannot honor an appeal for missing a base that the runner is touching at the time of the appeal, and after the BR reaches 1B (whether missed or not), the base becomes one big bag;

2) Out, because the runner did not "return" to the double base since the runner never left the base.

I think I lean toward #1.