An interesting question. The answer is probably not an increase in sales. Access to the money is questionable.
There are different ways paper books and ebooks might be sold.
1) Paper books in book stores. Those in the stores are sold already, only reorders would send more money Chad's way. I wondered if anyone was running the publishing company now to fill any orders that did come in. (Tammy and Chad appeared to run things there. Maybe someone else is able and is filling in, but I wouldn't depend on it.) It is also possible they have a distribution company that is handling this for them in which case this would be continuing as normal, but how the money would get to him is a question.
2) Books sold from the publisher website. I'm not sure if the website had a storefront or not. I'd looked at the site the other day and say all the books listed, but didn't dig that deep. So I went back just now and the site is down, giving an error. That feels like someone was able to do something and chose to take the site down for some reason. No doubt this reason has to do with what is going on, whether an inability to fill orders or a desire to limit information or fill in the blank however you want. (This last part, MOO.)
3) Books sold from other internet sites, specifically Amazon, but the potential is there for lower volume from others. This could be paper books and it could be ebooks. Paper books it depends on how they get printed. It's possible they do what is called "print on demand" in which case there wouldn't be a limit to the number. Or it could be limited to just those in stock and function the same as paper books in #1. Ebooks, however, will keep selling. Amazon sends money every month for the sales period from 2 or 3 months ago, so it there was to be a spike the money would lag behind. This is setup to deposit in a specified bank account. Potentially that account could be changed to another one and if law enforcement wasn't keeping a watch on it they could get some money this way.
How much money they might get from sales at Amazon is a good question. I'm going to say not much. I checked the sales ranks on a few random ebooks and the best I saw was 400,000. IIRC that kind of a ranking indicates a copy or two has been sold in the last several weeks, but they aren't flying off the shelves. Even with all of Chad's books selling a few copies, he's not seeing enough from these to live on, IMO. Keep in mind, this is just from Amazon which is where a lot of authors make their living. However, Chad's market is such that he could be making a living from a couple LDS focused chains with his volume of sales through other sources being insignificant. It's possible he's seen a spike in sales at Desert Book, for example, but Amazon hasn't spiked.