TextEdit files' Kind is "Unix Executable"--how do I change this?

Question

For some mysterious reason, a whole bunch of my TextEdit files now show up as Unix Executable files! I'd like to change the Kind of these files, so they once again are identified as Rich Text Format (RTF) or SimpleText documents.
I was able to change their extension, so at least they now open up in TextEdit when I double-click them, but I'd like them to show up as well when I search for Kind, or list files by Kind.
Any suggestions of how to change this would be welcome!

Answer 1

OK, I figured out a quick and dirty method. Open each file in TextEdit and save it. It changes the kind back to TextEdit.
First, open several files at once in TextEdit (do that by dragging the files to the TextEdit icon--if you double-click they'll open up the Terminal which you don't want.) Then, it's a simple matter of keeping your finger on the Apple (command) key, while you alternate between pressing S (for command-s for save) and W (for command-w for close). You can sit there mindlessly going through the rhythm, back and forth, and process dozens very quickly!
In case anyone else runs into this problem, here's a way of finding all the Unix Executable files. Go to your Documents folder. Do a Find (command-F), pick Documents folder, select Search by Kind, select Other, and type in Unix Executable. Voila! A list of those files. Save the search so that you can repeat this as needed. (I also discovered that you can search for contents and type in Unix Executable and find them.)
WARNING: BE CAREFUL! Some of the files may not be textedit files! Or you'd rather have them open up in another program such as Word. So, you'd have to do the open, save, close shuffle via that other program.
Alright! I just discovered some more in another folder (I hadn't started with Documents). So I'm off to fix those, too!
Still, there must be a good batch processor somewhere (freebie hopefully) that would convert the Kind quickly. (And here I don't mean the type and creator as some of these files showed TXT and .txt but still had their Kind as Unix Executable.)