My problem with that scene is not so much that Harby doesn't blow everyone into oblivion (it's stupid, yes but I can stow that one away as dramatic necessaty of that scene, maybe there are 50 more gunships coming in from the other side or whatever).
My main problem is that Shep calls the Normandy in the first place. I mean, they are st the end of all things. Everyone says it multiple times, it is practically hammered into you (as in the audience). Hell, Anderson's last words before the beam run start are "this is it". Clearly there is no time, no turning back, no second chances here.
Now add to that that I am not an exceptional and extremely skilled player. My squad mates are going down in during combat sometimes. So they lie there in the middle of a hostile area. Still, Shepard never called for backup or extraction, s/he kept on fighting and let the internal suits medical functions revive the squad mate when the area is clear (I still have that aversion to using medigel drilled into me from ME2, don't want to loose these 100 credits

).
But now that we are in our final strides, that everything is on the line and that it doesn't look very good, Shepard suddenly has this brilliant idea of calling in the Normandy? Nevermind that the ship itself is probably engaged in combat at the time. No, just no.
But as I said, it's content so I don't want to take it out until I have to (also, restoring the old scene might be more difficult than it sounds).
@TheCast: While it wont crash you game, I can't recommend using v0.3 in other languages. The fact that the cutscenes are gonna be in English is not the problem but all in game scenes with new dialogue (such as the Joker-Shepard dialogue and Hackett's VO during the memorial scene will revert to the original so it's feel very odd. We'll probably start some translations after v0.4 is out. Can't give you an ETA on that yet though, sorry.