I would certainly be tempted. Note that a steeply increasing difficulty can have the same result though.

Now, miner manufacturers might start refusing refunds like BFL is doing now. Although I'm not sure how legal this is, probably wouldn't work in the EU at least? Also, people getting refunds and buying BTC could stop the slump and make the price increase again, just like the current downtrend is probably partially caused by ASIC sales, where BTC is converted into fiat, which the companies need to build the units.

I would probably do it if price approached $30 and manufacturers would grant the refund. I wouldn't feel bad for not adding hashrate to the network; there's plenty coming and I could pocket the difference, waiting for better btc values / more reasonable asic prices and try mining again then.