Free relief is not available. Either play it as it lies or take an unplayable.
This 'Clarification' refers
Rule 16.3b:
1. Player Not Always Allowed to Take Embedded Ball Relief:
If a player’s ball is embedded in the general area but neither the reference point nor any part of the course within one club-length of the reference point is in the general area, the player is not allowed to take free relief under Rule 16.3b.
For example, free relief is not allowed if:
- a ball is embedded at the very base of the lip, wall or face above a bunker,
- the spot right behind the ball is in the bunker and
- within one club-length of and not nearer the hole from that reference point, there is no part of the relief area that is in the general area.