DIY mold remediation?

[Samantha Hiscock]

I bought a nasty little duplex this week with a ton of potential, and a ton of mold in the basement. The property has been flooded and not properly dealt with. At this point, the power has been off for over a year and no attempts to manage the moisture (even with a regular dehumidifier) have taken place in atleast 3 years. There is no standing water in the basement right now. I called a mold remediation company to come do an estimate, 11k. It seems outrageous. My husband did some googling and has decided that he wants to buy an abrasive blaster and soda blast the basement. Apparently baking soda kills the mold and cleans the stains. The YouTube videos make it look insanely easy. Obviously we need to deal with the moisture first and have rented a commercial dehumidifier to remove the excess moisture prior to starting any work. 

Does anyone have any experience with soda blasting mold? Is my husband completely crazy? Will this work or are we wasting time and money?