So there is a heatsink... I have rarely seen a chip like this on a pc board. Since this chip is mounted by a machine (not really a machine, but the components are put on the board with flux, then put into an oven,probably microwave because the metal heats very fast in this way,the other materials heating slower, and the jonts are soldered at the same time) I can't imagine any method for taking it out, but heating the pcb on the other side, right under the chip with a flame (i know it sounds really stupid)!
QUESTION:Are there components on the other side of the board?