Can you activate Flight or Fight while your units are in Vilemaw's Lair (even though they cannot move)?

Ruling: Yes, you can activate Flight or Fight while your units are in Vilemaw's Lair. Since having units in your base is not an illegal game state, the activation is valid even though the units cannot actually move.

Nuances:

• This can be useful for effects that trigger on activation (such as Ember Monk)
• Vilemaw's Lair will prevent the movement, but the card still resolves