Three GST events were held - in Kingston, Miami and Philadelphia - before the project collapsed in December 2025.
The legal filing in Delaware includes an accusation that Johnson paid himself $500,000 (£375,000) eight days before it collapsed - a claim GST has called "unfounded and false".
In their filed objection on behalf of an official unsecured creditors committee (UCC), state lawyers said: "On June 4, 2025, just after the completion of the Philadelphia event, and approximately one week before announcing the cancellation of its Los Angeles event, Mr Johnson initiated a payment of $500,000 purportedly on account of an unsecured note.
"There are no board minutes which reflect authorisation of this insider avoidable transfer. Shockingly, Mr Johnson elected to secretly prefer himself over the athletes and other, non-insider creditors, while at the same time feigning to the public that he was selflessly looking to advance the interests of the athletes."
A spokesperson for GST said Johnson put $2.25m (£1.8m) into the business on 23 May 2025 - a week before the event in Philadelphia.
In a statement, GST said: "Mr Johnson advanced millions of dollars for GST's operating expenses, including athlete travel, accommodation and costs, only a portion which was repaid through the reimbursement.
"It is unfortunate that the UCC chose to ignore facts and is instead attempting to discredit the company and Mr Johnson through false statements."

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