In a quote from Harness Racing Update, it would appear Simpson not only worked for Allard but, from November, 2020 until now, for the FBI as well.
..."Simpson had been on the government’s radar since at least mid-November 2020 when his lawyers and the government agreed on a bail package for Simpson, which included a $50,000 bond and assurances that he would have no contact with racehorses without supervision of the owner of the premises where the horses were located. From there, the case seemingly disappeared until resurfacing this week."