Complex sentence: Shortly afterwards, the staff finds a video on YouTube of Ryan being arrested for fraud; as Oscar explains, the website was floundering, so Ryan double-counted office sales as website sales, fraudulently inflating the firm's figures.
Split into simpler sentences: Shortly afterwards, the staff finds a video on YouTube of Ryan being arrested for fraud. It is revealed that the Ryan's website was floundering, so he double-counted office sales as website sales, fraudulently inflating the firm's figures.