This makes it even more look like "opportunity makes the thief". When there's more money involved, I'd expect more accurate accounting, not less.
If we look at the whole situation from only one angle, then it seems to be exactly as you wrote. For the time being, I will treat the whole thing as a combination of various life circumstances that could have happened to any of us - and I hope that all three members will be able to prove that this is the case. In case the opposite turns out, we all know how DT members and others will react - you build a reputation for years and destroy it in a few days.