Elna 6003Q Sewing Machine won't snap out of bobbin winding mode

I had the same problem and fixed it myself. Remove the portion of the housing that coincides with the bobbin winder. You will need to remove two screws to do this--one is just to the upper left of the bobbin winder itself, and one is hidden under the handle on the left side of the machine (lift the handle, and look on the machine on the left side.) It takes some coaxing to remove the housing, but it can be done--be gentle. If you need to, remove the housing on the left side of the machine that covers the needle assembly. This will make it a bit easier, but still, be gentle.)
After removing the housing, you will see a black metal piece with a elongated slot and a screw adjacent to the bobbin winder mechanism. Unscrew the screw a turn or two, and slide the piece to the other side. Tighten gently. Turn your machine on, and move your bobbin winder back and forth and watch the screen change from bobbin winding to the main straight stitch screen. Now, do a brief Dance of Joy. I hope this helps.