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Yeah, I asked because it does a similar loading dance, though I haven't experienced any hanging. If you haven't yet, I'd give it a whirl. Not just because of the issue you posted, but because it's a really nice way to browse (supported) forums when mobile.
Okay, rebooting the iPad seems to clear the problem. Go figure. It's either random or there's some weird Safari glitch that somehow only affects the Reply With Quote button.