akiro27 said:
it is *not* the round base that comes with the doom diver. It's the flying model itself, which is a (nonstandard) template
-luke
This is not true, the OnG book states "that any units touched by the doom divers base..."
which is indeed a 1.5 round base.
Now I have looked over these rules quite a lot. Seen everyone's opinion in the world of the inter-webs, and I will point out
most agree that it is legal to guide into combat.
Here is my final opinion:
1.) I agree that OnG care not of their allies and would target no questions asked

2.) I agree that the first target is not allowed to be a unit in close combat.
3.) I understand the rules of you can "accidentally" hit CC
4.) I understand that stone throwers were not meant to target the ground and "scatter" into CC but because of rules can. Yet would defiantly be unfriendly in my opinion.
5.) I understand they start off as stone throwers. But it is the "scatter" rules that are completely different than a stone thrower!
6.) as the rules are worded for the doom diver you are allowed to move a d6 in any direction of your choice. If not a misfire. This, in my opinion, counts as control and moving into a CC would be a target. (yes yes the rules are really weird here) This is my opinion.
p.39 BRB
"Models are not permitted to shoot at enemies that are engaged in close combat."
"Some war machine weapons, particularly those that use templates, can accidentally hit friends whilst aiming at the enemy. The key word here is 'accidentally'
OnG book Doom Diver
"...roll for scatter as you would for a stone thrower. After doing this, you may roll a D6 and move the Doom Diver Goblin model by that many inches in any direction."
So having said that, I say NO. I will point out that I play either way. I would prefer a dice off if the OnG player wants to ride in the shade of the rules.
There is no clear answer is the only certain answer here. So decide at start of any game to avoid unfriendly game play.