Thanks everyone! It's been a long time since I read X-Men, so I'd forgotten about Cyclops' eye beams being concussive ... or else I thought that it was the effect that was that way, not the beams, so still nothing physical to grab.
I totally forgot about force wall! Once I thought of straight TK grabbing something insubstantial my mind froze.
I think they're definitely heading for the Phoenix saga. The light beneath the water at the end had a vaguely phoenix shape. In fact, I half expected to see her rise from the water as Phoenix.