Seems like the administration was forced to grant the pardon to avoid being run to the ground by the opposition after the huge controversy involving huge pay-offs in paper bags.
Estrada told The STAR he “had no choice” but to ask for pardon as he reiterated his frustration with the country’s justice system.Langya
“But I thank God for enlightening the mind and conscience of Mrs. Arroyo in granting the pardon,” he said in a telephone call last night from his detention in Tanay. - GMA pardons Erap by Marichu Villanueva
, based on the above statement he's not even sorry about everything he did while he was in power. Click the screenshot images below from the Philippine Star
to read the articles regarding the former President's pardon: