I’ve just spotted this. I will leave others to decide whether they categorise me as a spiv, a wide boy or both (!) but you are wide of the mark on the three names you quote. Rick Frost sold out of Peterborough but remained in the sport as the main sponsor of Poole. He has now sold out of ReadyPower but is still a welcome friend at Wimborne Road. Sandhu was only ever interested in what he could get for Brandon as development land. To my mind, the vandalism at the site pre-sale to Brandon Estates bears that out.
I think Ged Rathbone only managed to make decent money at Peterborough when he received a substantial payment from Toruń so they could use Jack Holder even though he was committed to ride in England, and he was roundly condemned for doing so. I suspect it was that action rather than anything to do with BSPL which made him sell up.