I don't think they intentionally try to separate families. I agree with canadiangirl; they are just going through the application process. When applications are delayed, it's usually for a reason, whether pedantic or not. You just have to hang in there and be patient (I know, everyone tells you to be patient...this process sucks!).
What I hope is that they move on to March applications next week. I really want to get approved before the end of July so that my wife's application can be in Hong Kong before September. If that happens, it's very possible she will get her visa before her medical expires on March 1, 2013.
We're going to Hong Kong around August 13-14 for a few nights. We're staying at the Courtyard by Marriott which is very close to the consulate. I think I will pop in to ask a few questions and see how backlogged they are...according to the latest update, HK is taking 18 months for 80%...so at least the timeline has improved, if only by a month.
Good luck to the February applicants who are still waiting...you'll get approved VERY soon!
FS