It effects them both.
The email response we got on the issue basically and essentially says that melee is unit, not model, based...
 
so so even if he only did enough to kill the one he was in base contact with, he’d end up in contact with the other at the end of it.

Yes. What would happen here is kind of weird.
Say the close bike is the leader of the unit. The far bike gets assigned the wounds first and dies, then the leader ends up with 1 wound and luke is still where he is.
Say the far bike is the leader of the unit. The closest bike gets destroyed, the one extra wound gets assigned to the far bike and then luke is moved over to be engaged with the far bike
This post has the email clarification, I don't think its made it into the official one yet -
 

UGC scenarios would be awesome!  Especially if they included a rating system to help sort the wheat from the chaff.

I trimmed the pegs of mine, painted the models, and then glued them to the bases - which is what I did with the previous versions too.

I just ran home during my lunch break and checked the models.  For those of you who don't know, one of the changes from 1st to 2nd edition is that the monster tokens are now all identical.  The backs of the tokens used to have different attack methods for different monsters.  This is now all taken care of by the app.
 
As such, I'm thinking that I'm just going to rebase the monsters onto round Games Workshop style bases and use a reference sheet for the monster stats.  I can always set the various colored rune markers next to the monsters to tell multiple instances apart.
 
For those of you wondering, the Star Spawn fits great on a 60mm round base.  The Riot group (the three dudes) fits on a 50mm round base.  The weird fish monster and the snake monster both fit well on 40mm round bases.  The cultists fit well on 25mm round bases and everything else fits well on 32mm round bases.  ALL of these bases are smaller (in some cases MUCH smaller) than the original bases, letting the monsters fit better on the board.
 
My plan is to start rebasing tonight.  I'll post some pictures to my blog and link it here.  I'm hoping this corrects the only thing I don't like about the game.  I'd bet money that if they weren't tied to the monster base style from the 1st edition that we'd have seen something different.  Using the same system allowed them to include a conversion kit.

Road to Legend has reinvigorated my Descent collection, but now I want all the original Lieutenants!   Anyone have any idea if they reprint these, since there's quite a few out of stock.  Or am I out of luck.  I really don't want to pay ~$90 to pick up Splig on eBay...
 
 

I checked too, the older out of stock ones are listed as On The Boat on the Upcoming page.
So yes, they are on their way.