Why didn't Shojo just send his wizard to fetch the order?

[Fyraltari]

Does he not? In the plan he does in the comic, how exactly does he control Roy after the fake trial? By hoping Roy will do the best he can, I'd think.

By threatening him the moment he says this isn't his business.
That doesn't count, because if Roy blabs to Miko about secretly working for Shojo behind the paladins' backs would also cause problems for Shojo (oh wait, it DID cause Shojo problems when Miko learned that!), but Shojo STILL employed Roy.[/QUOTE]
Yes but with the fake trial Shojo could be sure Roy wouldn't tell anyone.

Either way, he could have the Sending be worded as coming from Eugene, instead.

There's just no way a simple "call" could be more risky than the fake arrest & fake order & secret employment business was, if we take this seriously.

Tht's because you have saner priorities than Shojo. A character acting sub-optimally is not a flaw in the story, especially when that is consistent with that character's personnality.