The technique for desoldering is as/more important than the gear used.
Not that a lot of mine has been on XE but the best desolder technique I found, use an iron with tapered tip at about 240 Degrees C.
Apply the heat to the side of chip pins. So, the soldering iron will be almost parallel with the pin, almost right-angled to the motherboard.
Don't actually touch the motherboard, just allow the heat to transfer. Then use solder sucker from the non-component side of the motherboard after applying about 10-15 seconds worth of heat.
Once you get good, once per pin will be enough. Leave the power/Gnd pins with larger traces for last, they're usually harder as the fatter trace acts as a heatsink. For some chips it's just easier to prize the chip out while applying heat then clean up the residual later.
Using such method you should be able to almost guarantee no damage to the motherboard and you can reuse the ICs too. Though with faulty Ram you tend to just throw the lot out.
To hold the motherboard during the operation, either a hobby vice or use a cardboard box with slots cut to hold it for you.