If this is supposed to make us hate Angus...yeah, still not feeling it, myself. Again, I don't disagree that he could be handling the situation better, or that his focus on getting the gig hasn't prevented him from picking up on Faye's true feelings about the matter, but...well, I still think they're both responsible for getting to this point.
I also agree that you could say Angus is half-assing his efforts, but if we're going to say that, we might as well call it like it is with Faye: she's not putting in any effort at all. Not just in the latest strip, but throughout the whole arc. Sure, she's been outwardly supportive, but has she really given any thought to how the situation could work, or how she could come to terms with a less than desirable scenario?
Maybe off-camera, but whenever she's used another character as a sounding board, it's usually been to say how much the situation sucks, that she wants to be supportive, but she hates the idea of it happening. We haven't seen any attempts to come to grips with the worst case scenario, no thoughts of "Well, I love the guy, so I'm willing to give it a try", no "OK, how could we possibly make this work?", or hell, even "I don't think this can possibly work, so it has to end, as shit as that'll be". Maybe she's contemplated that off-camera, but as far as we've seen, she's basically been unhappy with the possibility and tried not to think too much about what'll happen if that comes to pass.
I think that's what Angus' expression is saying in the fifth panel of 2815: "You won't actually make the effort, will you?" or perhaps "You're not even willing to try, are you?" A bit unfair and callous, no question, but I can understand his position. Of course, I can still sympathise with Faye as well. I think they're both at fault to some extent, and I think they both have an understandable position too. I feel it's supposed to be an unfortunate turn of events, an example of how good news doesn't always bring happiness or mean that everything's OK. No one's the bad guy, it's just the way it goes when you want different things.
But as has been already said, maybe it's just a case of giving each other space for the moment, and letting cooler heads prevail. Faye is also at work, and while Dora's a pretty lenient boss, it's not the best time to hash everything out. I kind of get the feeling that for some readers, no matter what Angus did, he'd be in the wrong and a jerk. Fair enough I suppose, we all have our own reactions to the characters, which speaks to their quality and depth.
For me though, it's just a case of two people who have their faults but are ultimately likeable, who care for one another a lot but have handled a situation a bit clumsily, and now have to make some tough decisions one way or another.