Desoldered and resoldered chips

It was surprisingly easy - removal was as simple as grabbing the part with tweezers, and going over it with the air for about 5-10 secs and it popped right off.  Soldering a chip on was not much more difficult - apply some liquid flux, hold the part in place, heat it, and then just nudge the part to position it if needed.  Still only takes 10-15 secs of heat. 

Wide angle of the board, many chips removed

Closeup of a resoldered chip