I've noticed a lot of posts on the main Tapastic site where comic artists apologize for posting a comic late, or for skipping a week. Some of them seem to feel really bad about it. It reminds me of all the failed blogs you see on the web -- where it hasn't been updated in years, and the last five posts are all "Sorry I haven't been updating more often," which seems somehow sadder than if they'd just posted when they could and stopped when they couldn't do it anymore.
I dunno, I just wanted to say, if you're reading this, that you don't have to apologize. You can share whatever you want about the situation, but I don't think you really owe anybody an explanation, and you certainly shouldn't beat yourself up about it. If you're going to be away for a while, an estimate on when you'll be back would be nice, but don't worry about it beyond that.
I understand things happen, and I'll be happy to read more of your work whenever you're ready to make more.