Does that mean he's always injured, because he doesn't play much at all

He fully commits himself to every tackle,yes he's injury prone for that reason. Yes he was injured when Leigh bought him from 10 miles up the road. Not 10,000 miles. But that doesn't matter because Elliot isn't injured, it's the better players above who are.

Not a great loss if true, as I'm not sure what position he would have played. Possibly you know?

I'd say yes, because those are the rules. In Elliott's case, it doesn't matter, because his employers changed their minds about releasing him - and that's their prerogative. Anyway, I would question Leigh (or anyone) signing overseas' players at this stage, for 2018 season, because they have virtually zero time to settle in, for the 'Eights' - and that's before you factor in whether Leigh, in this case, even make the 'Eights'!

I have no idea, with everyone available the back 5 are pretty strong TBH.

Let's see if Evans plays this weekend, I have a hunch that we're not going to see a great deal more of him - which is a shame bbecause we need his experience and pace should we make the 8s