One block fixed, two to go... 21383 and 21384 are still broken. Hopefully somebody is still working on it. As mentioned before: it's a pitty that there is no communication from the pool owner at all. A simple "We are working on it and hope it will be fixed in a few hours" would be great. That's not to much to ask for... is it?
I did not have any noticeable issue with 21383 and 21384. You are right that providing a brief feedback to pool users would be of great help to calm the situation.
BTW now the reward payout was issued but it is stuck in 'confirmation limbo' (not Slush's issue, TX fees were paid)
"Estimated Confirmation Time 6 hours (queue position 782)", still has 'unconfirmed' status so it's not seen by our wallets.
Edit: Just got the first confirmation.