The company just said it doesn't need to sell stock -- but will it go ahead and sell $400 million worth anyway?The story around AST SpaceMobile (ASTS -17.13%) keeps getting curiouser and curiouser.In an article published Wednesday, I suggested that after its dramatic spike in share price in recent months, the satellite communications start-up should logically now sell a lot of stock and raise a lot of cash.Just hours later, AST denied that it had any such intention, saying that it has all the cash it needs ...