But your opinion is NOT based on law. The law does not require that the guardians have to transitition the child to their son. The law does not require that guardianship be ended just because daddy grew up and decided he was ready to parent. So the grandparents are meanies but quite frankly, legally, OP's ignorance is what caused this. He was more than willing to do whatever it took to have his freedom while he went to school and he declared himself unsuitable to parent. Now where in the law does it state that because HE changed his mind, he should get custody returned? I'll wait.
Not to step in for L, BUT I read what she said as the same thing you are saying here.