Removing an echo from Audio in a Sancuary

So this morning I did the impossible: removed an echo from some footage shot in a large room with no external microphones. I do the majority of my filming with DSLR camera's following true hipster conventions. My own personal camera no external mic input (if you want to give me money for an upgrade I would gladly accept, I had no idea this was the case when I bought it. Do your homework folks)

So the shoot I was doing was promoting a Discipleship conference in Kitchener Ontario, and they wanted to film in a beautiful old church which looks excellent, but the reverb is a nightmare.  Not only did I not have an external mic, we also found out when we got there there was no lapel mic to take a secondary audio into a board. I really need more gear.

Removing Reverb from Audio Clips

When I got home I started doing some research on how to fix it knowing there isn't an easy or 100% accurate way to do it based on how messy the waveforms are with a natural echo.  I did however find this post on Removing Echo from Audio with Adobe Audition that actually worked! *Note:*  I would make one update to this post however that the Centre Control Channel Extractor is found Effects> Stereo Imagery > Centre Channel Extractor in Adobe Audition CS6+

Now note that this is really not possible to totally remove an echo: the best thing you can do is plan ahead and have the proper gear handy and know how to use it when you get there. If you haven't got the money to spend on Audition, there are free trials available from Adobe or you can do what I would normally do and get a copy of Audacity, an excellent free audio editing software and look around for ways to get the echo out from there (someone should write a plugin for this?). 

Let me know if you find any other helpful posts out there that actually work.