When a stunned unit attacks into Vilemaw's Lair, does the unit get recalled back or does the stun prevent it?

Ruling: The stunned unit gets recalled back. Recall is not a move, so Vilemaw's Lair (which prevents movement) does not stop the cleanup recall that returns attacking units.

Nuances:

• This same principle applies to other recall effects like Zhonya's Hourglass - Vilemaw's Lair doesn't prevent Zhonya's Hourglass since hourglass recalls rather than moves