"If you are experiencing this situation, we are able to repair your saved data," Nintendo writes on its support page for The Legend of Zelda: Skyward Sword. If you couldn't avoid triggering the bug (here's how), you can now send in your save file to be repaired. The company also intends to release "a program that will repair save data for those who have their Wii connected to the Internet." That sounds almost like a patch, filtered for technical terminology, but Nintendo only refers to it as a "program." (Aside: The mythical Wii game patch does exist in some cases!)
We'll let you know as soon as we hear more about this restorative download. If, in the meantime, you feel paranoid about Link's bugs, you can keep up to two duplicates of your save file -- just select "copy" from the main menu every now and then.