Here is the spec.
The whole thing about this spec is your smash, (which is an aoe) even when in a single target fight.
For this spec I normally open with Sabre Throw > Force Leap > Force Crush > Sundering Assault > Smash. From here I will move to Force choke > Obliterate > (filler ability like Ravage or Slash / Sundering Assault) > Smash.
The reason your Smash hits so hard (my highest is 6.8k) is due to 2 buffs that you must make sure are up before Smashing these are - Shockwave - Increases the damage of smash by 25% with each tick of Force crush or Force choke. Stacks up to 4 times. And Dominate - Force Charge and Obliterate have 100% chance to make the next smash used within 15 seconds a critical hit.
The 2 of these together makes a massive hit. Bare in mind that this is an aoe meaning that up to 5 people will take a massive hit.
Make sure you are using your Vicious Throw every time you can (once your target is at 20% hp or lower). and another filler you can use is Force Scream or Vicious Slash (depending on your own preference).
If you need any more info give me a shout =D.