Stereo Kicks will be safe this weekend as the producers will do everything in their power to boost the boy band's rebound vote just like they did in week 2.
I do have a feeling OTY will be in the sing-off again though. They had their bounce last week, so are due to come down from it now. Looking at past voting trends, this makes for a high probability they'll be there. Whether they are booted or not will likely depend on who they are up against. If it's Paul, Jay or possibly Andrea, I can see them saving OTY to get them a spot on the tour as well as to rid themselves of someone they want out.
If they're up against the likes of Lauren or Fleur the only way I could see the group surviving is in true week 5 shock exit style through deadlock.