I realized that yesterday's strip didn't even mention Vegas once but it still had the title "What happens in Vegas...". That's because I knew what the arc is about and I wanted something that would work for the whole thing... I hope you weren't too confused by it.
The Ted situation in question is George's plan to break up Ted and Zoey by inflating Ted's ego with getting his band some gigs at Vlad's. The relevant strips are found here
, and here