Why on earth would anyone risk their life to "save" a 15 years old, no sharklet, old engine, low value, vintage A320? The planet is full of stored aircraft. Wizz doesn't need the capacity either as currently there are 17 aircraft parked (which did not fly at all in the last 3 weeks per FR24) beyond the ones stuck in Ukraine. LPO/LPY/LWB/LWM/LYI/LYJ/LJA/WUKL/LTA/LTC/LXB/LXG/LXH/LXJ/LXQ/LXV/LXW.
I doubt all of them are under maintenance. Another one is being returned to the lessor, was just painted white last week (LWA). The combined value of the four aircraft is change money compared to the billions Wizz claim to have in cash. Why then? I can't see the point.