Ken's tactic won't prevent him from killing you, but it will prevent him from camping you. He will only be able to kill you the first couple of tries. After three to four attempts, your characters will be so far apart that he can't camp all of them at the same time. He'll either have to run from corps to corps or camp one of your corpses. If he tries try running between the corpses, just ress the chars that he isn't at and heartstone. If he tries to camp one specific character, either group your other chars and kill him again or use the grave yard to ress that one char. Although a grave yard ress will give that char ress sickness, your other chars should have enough dps left to continue playing.

It takes a bit of practice, but mastering this tactic will allow you to escape almost any corps camp.