Action: If LDP is wounded, return him to his owner's hand.

Immediately after only, or any turn after?

well i assume its just poor wording since its an action, i think instead of 'wounded' it should have been 'has a wound'. would have been clearer that way.

since its an action you can do it any time other than a disrupt. its not a response which led me to believe its 'has a wound' rather then is 'wounded' so you can let him sit out there with one wound for as long as you please, just be careful they dont shotgun blast him or something.

Correct. Wounded in this case means "has a wound" - It's the 'new' wording templating I suppose.