Could Floyd Mayweather Jr be using 'retirement' as a negotiations ploy with Manny Pacquiao?

There's a growing theory amongst many boxing fans that Floyd Mayweather Jr's claims of retirement are all just a negotiations ploy with Manny Pacquiao. A scheme to force Pacquiao into agreeing to whatever Floyd Mayweather Jr is demanding. It's hard to tell if this 'train of thought' is accurate or just a last ditch grasp of hope by the die-hard Mayweather fans.