Sticking with the disproved strawman, I see. That's really rather pathetic since scripter rubber your nose in the fact that the term was "put away" and not divorce.
I googled the terms “put away” and “divorce” and found 2 sites that explain the difference pretty well:
http://www.divorcehope.com/apoluoshalachputtethaway.htm
http://www.totalhealth.bz/divorce-and-remarriage-put-away.htm
This second site is really interesting. It argues that when Joseph was considering “putting away” Mary because she was pregnant, if putting away was the same as divorce, how could he divorce her since they were not yet married? The conclusion is that the two terms are not the same. Putting away is a separation or abandonment without legal divorce proceedings. This would result in adultery if the man re-married.