I've recently taken over maintenance for the Post Teaser plugin from Jonathan Leighton. However, Jon can't give me the access because he too was not able to access the wiki. He has agreed to confirm my story if I can get the admins to ask him but I was unable to find out who to contact for this kind of transfer.
If anyone knows who to contact and how to gain the access, please let me know. I would love to update the official distribution that fix the compatibility issue with WordPress 2.2.x