There are several rather peculiar things about this:
- The damage by Outside of the Hourglass is inflicted by the vampire using the card, which is a rare thing for card played before range is determined. Carrion Crows, Weather Control and the like all so-called environmental damage.
- The other remarkable fact is that Disarm can only be played when damage is inflicted. But since you maneuvered to long, how is it possible to play Disarm in the situation as described above. The reason is that the default range in combat in close, and Outside of the Hourglass is played before range is determined, therefore the damage was inflicted of close range. [This statement is not true (most likely never was). See also Ankha's comment below & the update of the "Did you know" post.]
- It doesn't matter (playing after Outside of the Hourglass) you played Strike: Combat Ends in the strike phase and don't inflict damage with that. Disarm does not require the vampire to inflict damage with a strike, only that the vampire inflicts damage (and not environmental damage).