What is that all about? From what I've read the earth's moon is currently moving away from the earth, not closer. So wouldn't the same forces affect the migration of planets once their environs are cleared of dust, gas and planetismals?
The tidal forces bend and stretch the planet. This results in friction and ultimately, heat.
As soon as you hear the word "heat", you should immediately start looking for places to drain the energy from. In this case, it is orbital velocity that is shed, which brings the planet in closer to the star.