Pooh Shiesty ’s dad, Lontrell Williams Sr. , is fighting the prosecutors' attempt to throw him behind bars pending the outcome of his criminal case ... TMZ has learned. According to court docs, obtained by TMZ, Lontrell -- who was arrested along with his rapper son over the alleged kidnapping and robbery of Gucci Mane -- said the feds’ case against him is weak and doesn't show he would be a danger to the community if released while his criminal case is pending. As TMZ first reported, the DOJ