Bomber's own FB page (30th Oct) suggests that it wasn't a straightforward parting of the ways:
"I have raced every season in full for British Speedway for the last 26 years and pride myself in giving my absolute all to every club I ride for on and off track, with professionalism.
Speedway is a funny old sport at times, I urge fans of any rider or any club to not look through rose tinted glasses especially this time of year, there is always more to a story, I can confirm my story is going to be a good one one day, but only when I hang up my boots - which won’t be any time soon 👊
Bomber 💣"