The formatting is for use with TheBestSpinner, simply removing the spintax will not provide you with a workable residue.
There are some tools around that can also work with this format of text, some are even free, albeit very limited in function; but this is not the place to link to them.
Google is your friend here.
If you wish to work with rewrites of this type then you can take it as read that a tool such as TBS is a requirement for your work and business. Of course, you have the article for which you paid, you don't have to use the rewritten version(s).
In my opinion, if you wish to work with content, rewritten or uniqueified then TheBestSpinner is no more or less than a required tool of the trade.