Was Stanton a murder target?

[Gene C]

As I said, I really have trouble getting a grasp on O'Laughlen, but I have trouble viewing him as an assassin.

Evidently, so did the commission, or they'd have hung him.
They could easily have made room for one more on the gallows.

Didn't he voluntarily surrender to the authorities?
And Surratt's speech , which Roger quoted, was made three years after O'Laughlen had died. Surratt could have easily implicated him deeper in the assassination plot.