I've done it both ways. If you are with some guys and they don't take a hint I hang back and help them clear mobs. Strikes with long driving sequences can be frustrating if the team gets distracted but that isn't too big of a deal. Valus's final entrance is one where many players ram tier sparrow up into the bunker so I started doing that as well. Sometimes I throw up a defender bubble near the entrance as a "get to this point people" indicator. Truth is- random is random and when you do the strike without your own fireteam you know going in you get what you get. It's ok to cry. But get your own tissue.