Exactly. The best thing that you can do when a Scorp is coming to Ambush is to either play your Knoweledge, Crippling Cut, Ring of Water, Otoya, or straighten and get away. Whenever they Ambush you, they need cards and not PK. Scorp dishonor is a battle of maths, and they need to be at low honor so they can Denounce/Unfortunate in multiple copies as the final hit.
The trick with Scorpion is to know when to let the box hit you with the honor loss. I am starting to thing that sometimes, having a guy dishonored rather than having him cause a 3 honor loss, is much better. Dedicated dishonors, are a race to -20, and their dishonor punishment is mostly minimal (or even non existent) or they can be worked around.
Never forget to Seppuku whenever you are about to lose a critical amount of honor, and for god's sake, don't target them with kill actions. At least let their Seiden Sanzo give you the fits with the Assigning Blame combo. Just imagine that if a Scorp has 2 assingning and Shares and hand, a use of the tower ability might send you to -12 honor down your current. Which means that you are 2 Neo-Breach away from utter humiliation.
So yes, whenever you are ambushed, try to run away. This is why I am packing, Ordered Retreats, Knoweldeges and Crippling Cuts in my deck whenever I can.