Dominion spread into enemy territories?

[NTJedi]

What has me curious about dominion spread is how sometimes my candles will appear on the other side of the map even tho I have no priests, special items or special units in those territories. In my current game I had two provinces far far away suddently have my candles yet no neighboring provinces were this way.
Also in another game I started near a corner of the map and grew to protect independent provinces deepest in the corner only later to discover enemy candles appearing. This second scenario could be sneaking enemy priests, but I don't understand the first scenario I explained.

[Graeme Dice]

There's a random event that replaces your dominion in a province with the dominion of an enemy pretender.

[Quietly]

heh, last time I played, I played ashen empire ermor, and had someone else's random event apparently cause a province of theirs to have an undead revolt, resulting in my gaining control of a 3 dominion strong province deep in their territory, a small army of undead, and 5 1H ermorian cultists, who immediately began herding the local populace into some massive ghoul breeding pit

[PhilD]

I've been reading the Dominion chapter of the manual pretty carefully, and have a few questions that some of you may be able to answer

* dominion spread: the manual says that when a "dominion spread" occurs (not produced by preaching), either the local dominion will increase, or enemy dominion will decrease, or it will be "passed" to some randomly chosen neighbouring province. Does this mean that each successful "temple check" will result, somewhere (potentially far away) in a dominion increase (or enemy dom. decrease)? (My past experience was that the effect didn't seem to be that radical)

* order of things: since dominion increase don't "leak" to other provinces, the order in which things happen can be important - as is the interleaving of these actions between nations. Is this specified somewhere?

(What I mean is that, if preaching happens first, successful preaching can make it easier to get a successful temple check, which in turn might leak to adjacent provinces; while, if preaching occurs last, it's more likely to be "wasted" as previous temple checks - and leaks - could have increased dominion to the limit before it happens. Also, enemy dominion spread can change conditions, so the question of "who goes first" can be important)