Official Super League account has just tweeted the teams for Wire/Widnes. They've called him Ed too. Probably because it's his name.
He goes by "Teddy" on his own twitter account, something I've not seen any media outlet refer to him as. Seems fairly clear he's not all that bothered about which shortened version he uses. Except I expect he doesn't like being called Jay (which incidentally is short for James...). Point remains, it was hardly something to pick the commentator up about.