@ Hero: in 4e, there's a difference b/t Reach and Threatening Reach - the latter allows the creature to OA w/in its reach.
@ DM: you're doing awesome and, while I'm happy most of us are still alive, I'm all for terror, danger, and threat of death around every corner. and again while I'm happy you're not pulling punches, I'm glad you've realized that maybe some of the encounters have been overpowered and are doing the right thing by tweaking where appropriate to make it a balance, yet deadly fight. Kudos!
LOL- actually I'm lolling a lot here... I'm genuinely terrified you're going to get squished big time, see my last turn with the Ogre Zombies. This is a magnificently bad-ass scenario.
The kudos goes to Harley and the Goodman gang.
Cheers PDR