Thanks =). I will pick up an extra one. Though I really love having everything running on Arch Linux. Makes it easier to make tools for.
On a side note: I have upgraded every machine with multiple firmwares multiple times (at least 5 each as I was benchmarking different versions etc). (so that is at least 100 firmware upgrades).This latest one was the only one that ever bricked anything bad enough that I couldn't recover the router. Probably just bad luck if anything. So for people that haven't tried a firmware upgrade and are still using stock on their batch 1s and batch 2s. Its highly recommended (Just make sure to upgrade your PSU).
Was happily running 20130703 since release with no issues at all. Highly recommended (on 20 or so units - batch 1 and 2, on my batch 3's I just run stock because of the temp sensor change etc). I saw the new firmware and decided to give it a shot on a batch 1 and it bricked it. No reset or nothing could get it back.
I figured no problem. I picked up some extra TL-MR3020 to replace the TP-LINK TL-WR703N router but those didn't flash and in the end I gave up on messing with that (from what I can tell you need a custom one or something).
A retail TP-Link 703n can be found on eBay or Amazon for about $20. It can be flashed with the 20130703 firmware, and then plugged into the USB cable inside the Avalon. The LAN cable or WiFi can be used to access it. It has a mini-USB power cable. I ran a for-repair Avalon a few hours this way before I got the soldering iron and made a permanent repair.