Two of my favorite companies just plunged after earnings, but the headwinds should be temporary.We're almost finished with the first quarter's earnings season, and there have been quite a few surprises -- some to the upside and some to the downside. When it comes to the latter, there's a difference between deteriorating business fundamentals and producing weaker-than-expected results because of temporary headwinds.With that in mind, here are two excellent examples of companies facing temporary issues whose ...