William Sanders reports in his newsgroup that the upcoming issue of Helix will be their last, and has been planned to be their last for quite some time now:

http://webnews.sff.net/read?cmd=read&group=sff.people.sanders&artnum=86316

I can vouch for the fact that they'd made these plans months before the kerfuffle.* In fact, knowing that made it more difficult for me to decide how to respond to the aforementioned kerfuffle. Saying that I'd never submit to them again would have been a hollow threat, because I knew that I'd never have another chance to send them a story anyway. And I wasn't sure that a boycott would have any effect on a magazine that was on its last two issues.

But there you have it. The news is out, and I will gladly vouch for them when they say that the kerfuffle didn't have anything to do with them closing their doors.

(*I learned about it either at the end of 2007 or the beginning of 2008 -- they accepted my last story on 1/31/08, and I'd already known the news for at least a few weeks by that point.)