Lets say Ryad is shooting at Kanan in the Ghost in the rear arc. Kanan has initiative and has already shot and done enough damage to kill Ryad. Ryad is taking her simultaneous fire shot on kanan. Ryad does enough damage to kill Kanan. But, the Ghost must be deployed. Does the Ghost deploy before or after Ryad is removed from the board? I'm asking because Ryad could be in the position that the shuttle may want to move to.

Does anyone have any ideas on how the timing of that works?

Step 10 on page 6 in the FAQ, says that you remove the attacker if that ship was kept in play due to the Simultaneous Attack Rule. The Ghost must remain in play until the Phantom has been deployed, and is then removed. The Phantom gets to choose a manoeuvre on it's dial before deploying, so it should be able to avoid Ryad's ship.

As to which destroyed ship is removed first, initiative maybe? I'm not entirely sure. I would suggest dropping an email to FFG. It really does depend on whether they intend for the attacker to be removed before the defender under the Simultaneous Attack Rule.