Yup, joby is right.
Taking the male out may have been a bad move. The male will take care of the fry till it is free swimming. When the fry are free swimming, that is when you should remove the betta. However, putting it back now... it may think it is another betta's nest and destroy it as well as eat all the eggs, or things may just return to normal. Try putting it back in and observe it from a distance. I doubt the eggs that fall down will live. Also, besides putting the eggs back into the nest, the betta also has to maintain the bubble nest.
P.T.