It didn't happen to me, but i had to have a re-install of my server and the new image had 5.3.27 so i was saved by luck and not good judgement.
If i had been like yourself 5.4.xx I would have had to have paid a 3rd party to downgrade me. As its beyond my scope of knowledge.
* You could put a notice on your forums as a Fix is Due in December.
* Limit the length.
Not great but what else can you do?
Good Luck. Sympathise with you.
