As for how they get away, well that's obvious!
Lulu has the best weapon!, The only one she will ever need - Jason! (Not to mention she is a Spencer, getting out of these kinds of messes is in her blood!)
Remember the s/l line where Jason lost his memory?
Even with out it, and having TWO guns pointed at him (from different directions) Jason got himself (& Sam) out of that hospital/clinic room with out a scratch!