Wow, the pictures are not pretty. If it's the same vendor I'm thinking of, the prices aren't particularly discounted either. I'd be pretty pissed if I spent hard earned money and that's what I received (and how I received it through the s&h process).
In the ground it must go! OR In the mulch pile it must go.
It will take a millennium to close those wounds in a pot. Hopefully your trunk will thicken and you may have the opportunity to reduce. My feeling is that these scares...both yours and mine will never heal completely and a tell tale will always be visible...to you if to no one else. However, with some creative pruning and reduction that those scares maybe visibly reduced or if you lucky possibly incorporated into the tree design.
The best you can do is try and make lemonade out of lemons at this point
King of jbp my ass, look at his video sometime if you want to laugh you ass off. I'm not bragging, his best tree is not as good as my worst tree. He's a legend in his own mind only.
One of Lindsey Farr's World of Bonsai videos highlights a nursery in Japan that uses wire in this fashion (not to rip people off but to embed into the trunk of JBPs and thicken them quicker). It may be worth a look. Unfortunately there are a lot of them and I cannot remember exacly which episode it was - either series two episode 4 or 5.
*edit* see http://www.vimeo.com/8052130
After a while the scars are not really visible unless you know they were there.
My biggest trouble with legitimizing the process of imbedding wire is that you also never get to carve any interesting deadwood into the tree as it gets older... I would be irrate to be sold a tree I couldn't carve into because of something like that.