If you have previously recommended this thread, you should see a tick / check mark on the recommend button. Click the tick to undo the recommendation (the tick may appear to change to a cross as you do this.) If you added a comment with your recommendation, you will need to delete that from your facebook wall separately.
Yes that was me after dd2 took a dive on the way to school Phew I'm just glad they were behaving and I didn't look like monster mum! Will be wracking my brains now trying to work out which one you were