Except that Marvel didn't need saving. They had already put themselves in the black, released Iron Man and Incredible Hulk, with Iron Man 2 nearly completed.
As a side note, did the mouse actually activate the van, or did it happen to be there when Ant-Man came back? Because when talking to Tony, he does claim that he got himself back.
Just think about the poor bloke who moved on and re-married only for his wife to come back...
I would have to re-watch, however I thought the whole ship was shrunk down with the stolen pym particles and was in Nebula's pocket or something?