http://www.tvsquad.com/2008/11/19/the-shield-possible-kill-screen/OK. To me, it's crystal clear that Vic is not going to throw Ronnie under the bus. He'll attempt to make the bust so Corinne gets immunity.
Then, if the bust is successful, things get interesting. Somehow he has to warn Ronnie without compromising his deal. I fully expect a fake death to come into the equation here.
The other complication: I expect someone, either Olivia or Claudette, to slam Aceveda for allowing all of the Strike Team's illegal activities. Then he'll show up, along with any number of others, under the delusion they'll arrest Ronnie after the bust. That way, Aceveda can claim he tried to take action "once he found out what had taken place without his knowledge."