If you want to play within their sandbox, so to speak, you can use the "show printable version" feature under Thread Tools:
And then select "Show 500 posts..."
That's built into their forum software and available to random Internet users who aren't registered. From there, you can cut and paste that content wherever you want.
When it comes to IP, having no small amount of experience in this area, remember that you have to cause harm, or intend to cause harm, in order for it to violate IP rights. Unless, of course, you've signed a contract that explicitly prohibits an action that you're taking. Causing harm means, in layman's terms, making money off of something that they would have made money off of. For example, if you copy a patented invention, but only do it for your own personal use and never sell it, then you're not violating their IP rights. However, if you create copies for friends and they compensate you in any way, you're violating IP rights because the other company could have sold the product to your friends but you've "harmed" their income. You can sometimes get away with it if it's a gift, in some circumstances, but often that will also qualify as IP right infringement.
My point is that if you posted something on RL, and then you cut and paste your own content to another forum, you're not violating normal IP infringement standards. However, if the owner of this forum does it on someone's behalf, or if he provides instructions on how to do it and/or encourages it, then they're infringing on IP rights because this website can now attract advertising and membership fees that the original site would have gotten.
There is a lot more to it than the above, but that's kind of a condensed primer.
So, using IB's thread tools to save a printable version of the entire thread and then posting it here, is probably not going to be ok since it includes the comments of others, not just your own posts. However, if you save that thread to your computer, then edit out all of the posts from other people, and then post that stripped down version that only contains your own posts, then that's probably ok. Probably. At the least, they would have a tough time finding solid ground to stand on.
To the original poster of this thread, I would recommend that you download a printable version of the threads in question, just to make it easier to get your content, then use an editor to pare it down to just your own posts. Then cut and paste that condensed version into a new thread. Removing all IB related formatting. You can click in the main body of the web page, then hit "Control-A" to select all, then "Control-C" to copy it and then "Control-V" to paste it into a new document. Edit from there. When you're happy with it, create a new thread and paste the edited content into the new thread.