I am seeing symptoms similar to the "lag switch" thread.
I play against the lag switch user about once a month. The super ultra lag (unlike any other gameplay lag) has only ever occurred:
1) In a warzone
2) While my team was winning
3) Mysteriously ends after the other team recovers and takes the lead
Pretty lame. I should start taking screenshots of the player list after the match and see if there are any common suspects.