[Yrkoon]

In SP games I sometimes end my turn before I mean to (hitting the "e" key instead of the intended "r" happens regularly), or forget to do something important and end my turn. The game then saves the game with the orders issued, and resolves the turn.

I have found that if I close the dominions window while the turn is resolving (it can take several minutes), I can then just load the game normally and resume from where I left.

That's a great way of not messing up a game if an accident happens (ending turn unintentionally), but only if you realize your mistake quickly. In you case Lord_Vader it probably wouldn't help, since you had to wait for the new turn to see you had done something wrong. But you might find it useful some other time