So let me get this straight...
The male is removed, and you put him outside of the breeding tank. You know what, I have a feeling that he is ready to breed again. (Although I wouldn't reccomend it; just let him rest.) Males will be ready to breed again in a matter of days.
Again, are there any other Bettas (Besides fry) in sight of him? That can also influence the building of a nest.
You said that his nest is bigger than the previous nest. Nest building indicates of a strong, healthy Betta that is ready to breed. This is completely normal, don't freak out or anything.
As for images, I know that a lot of people use imageshack.com, or you can create an album right here. I'm not much help when it comes to pictures because I don't know how to myself!!!
Hope this helped
- Dead Sunlight
Hmm, well I have a lot of fish...