Hey guys - sorry for the undue worries here.
In short, we had a syntax error in the ACH file we submitted to the bank last night. By the time we corrected it, the "bank cutoff" for the day had already past, although we submitted it only half an hour or so later. The net effect of this is what you're currently seeing - orders marked as "completed" because we have actually sent the instructions to the bank but they won't be processed until this evening when the bank does their daily processing. One of the unfortunate downsides of working within the traditional financial system (and their very old codebase), and why I love Bitcoin.
Wanted to make sure you guys understood what was going on!