Answer.... YOU DON'T!
This is the code to make the player in an asteroids like game screen wrap and us physics.
Do not give the players the wrap behavior. Give the player two instance variables to store the x and y velocity of the physics behavior when they got outside the layout. Disable physics when outside of layout. Reset the x and y depending on witch side of the layout the player left. (compare Players x/y with the layout width/height) then reset both the x and y velocitys and Enable physics.
WA LA! Easy.... not really. Its a mouthful but its not to hard just hard to type out.