I would hope they don't keep Fonua because isn't his option after this year lock him in for a further 2? He hasn't been good enough to deserve a 2 year extension.
From what I can see, Widdop does count because the quota is now 7 non-federation trained players, which Gareth Widdop falls under where as Thomas Leuluai for example whilst being a Kiwi does not.
Interesting note about the quota too is currently Leigh have 15 non-federation players in their squad.