You have 2 angles:
1) The angle the pod is "pointing":
Final_Angle = Something between Initial_Angle-18 and InitialAngle+18, according to the new point you set.
2) The angle the pod is "going":
You can obtain this angle from vx and vy:
Angle_in_Radian = atan2( vy, vx );
You can calculate v:
v = sqrt ( vx*vx + vy*vy )
You can decompose the v in vx and vy:
vx = v * cos (angle)
vy = v * sin (angle)
The speed is as I explained before: Final_vx = (Initial_vx + Thrust_vx) * 0,85
The same for vy