Circuit count seems to have mostly reverted to normal:
Tor's uptime is 4 days 18:00 hours, with 6691 circuits open. . .
on 3990 channels
found an object overview:
http://www.kmcg3413.net/aman/index.py?page=tor_internals.txt
[connection] [channel] [circuit] [stream]
tor-relays@lists.torproject.org