Hurrah!!! My block is saved.
What worked...The first suggestion that all of you gave that I tried worked, so I don't know... the other suggenstions may as well. But, thankfully, I didn't have to try more than one.
I put it on my ironing pad and turned my iron up to scorching hot w/steam, held it above the place and shot it with steam several times. I quickly put a piece of cloth over it and ironed the dog out of it (southern for 'a lot') and some came off. I did this 3 times and...voila...all gone. Not a single trace and smooth as a baby's bottom.
Thank you, thank you, thank you for helping to save my block. Here is a big 'ol hug to all of you <group hugs>...I just love this board.
Again...thanks!