Yea, the bottom two purple wires were soldered to the trace lines instead of the actual chips, but I would be interested to know the difference between my pink wire connected to the resistor vs. your small jumper wire on the chip. Apparently there is more than one way to skin the cat.
EDIT: You can skin the cat more than one way ;-) Just found this post asking the same question and here is one reply:
http://atariage.com/forums/topic/187900-strange-600xl-ram-expansion/