How was Jackson Hastings able to play us when he was supposed to be banned?

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The former Salford half-back did play twice for Wigan during his suspension period - in Super League games against Wakefield and Leeds - but his transgression had not come to light then, nor had the RFL made clear the punishments for breaches

Typical RFL cock up, no one knew what the punishment was, so therefore we cannot punishment him, anyway he plays for Wigan, so tough The line below says it all.

but his transgression had not come to light then, nor had the RFL made clear the punishments for breaches?

Nowt to stop them giving him a retrospective suspension is there ?? To be fair to the clubs that have had players banned and the ones that have not ?

Does anyone know who the four players are, or is it withheld?

Jackson Hastings is the only one of them I've heard of + two nobodies (Gavet & Riley?) and an un-named one.