Having 'put it out there' I would hope that they don't go back on the teenaged son thing. A while ago I
theorised that Locke (or Ben) is in the coffin and that he adopted Walt after Michael's death or something (funnily enough this is similar to what they've now done with Aaron and Kate!), so perhaps the teenaged son thing could be explained like that, without going back on their initial easter-egg..
