Split two columns from one page into 1 column separate page?

Yes, if the two columns are separated straight down the middle of each page.

You can do it using this (paid-for) tool I've developed: http://try67.blogspot.com/2009/09/split-pages-in-2-parts-and-combine-to.html

Be advised this is not an ideal solution, though. It would be much better to contact the publisher and ask them to re-create the file in the correct layout.

No.

Acrobat is a digital printing of what it was supposed to print. While there is some minor editing capability (e.g., correcting the spelling of a name, etc.), it is not a word processing application nor a page layout application. 

So think of getting a book that is two columns and wanting each column to be a separate page. 

To get what you want, it would have to be set up like with one page each column at the time of PDF creation.

Sorry