Bioware aren't responding for one of two reasons, or possibly, both:
The first is that they do not wish to address the community whilst tempers are high. The community is angry, and anything they say (even if it's intended to placate people) will just end in more angry posts. Bioware are probably still internally asking questions themselves as to how this actually happened, who is responsible, and how they can go about not repeating this farce in the future. As others have said, this is probably the result of Bioware being a facade for their owners, EA.
The second is that it seems to be completely standard for Bioware to ignore its community. Chris Priestly and Stanley Woo will, on occasion, chip in to inflame or mislead people in obscure ways - but never will you get a straight answer from either of them. They've both had decades of experience dealing with people over the internet, and their speech is always shrouded in political hyperbole. The more unfortunate thing is that the community managers would have been directed not to say anything. As much as I’m sure both Chris and Stanley sympathise with the situation, they’re powerless to change it and are more than likely not in any position to respond in any way as advocates for Bioware as a whole.
So, when you take this whole situation in to consideration and look at Biowares' history with such matters, we've got two chances of receiving a response at this point: somewhere between stuff-all and none. Don’t expect one.