I would hope the PA would take a grown up 'educated' decision rather than looking for seats on the bandwagon so no one thinks the organizer's don't have safety as a high priority.
Considering we've been using these for ages ,there is only a 3000 psi fill anyway and there is no official line from Stako I feel some people may be jumping the gun considerably.
The 'grown up educated decision' is to follow the advice of the appropriate body at the event. In most cases, this would be HPAC. Even if the PA took the stance that they would allow the bottles, you could have two scenario's:
1. HPAC refuse to let you fill them using their equipment.
2. IF HPAC filled the bottles and there was any accident involving a Stako (even un-related to this particular issue), this could cause insurance problems as HPAC had already raised concerns over the bottles.
It may be an over-reaction, but it is a damage limitation exercise until more information is known. People are just going to have to wait until more investigation has been carried out.