Gotta be optimistic. At the low voltages and currents involved in logic and CPU circuitry it's quite hard to destroy something. Not impossible though, so it's always a risk.

Have you tried continuity testing to find the short? Probe the edge of the pads, not the CPU. I suppose the other thing to check is that you could have wicked all the solder out of the connection, such that the pin is not electrically connected to the pad. Unlikely, but possible. To correct this if it is a problem, apply a tiny amount of solder to the fluxed pad and it will wick under the pin. BTW, you really need to use a 0.4mm tip for the CPU connection. Anything larger is a pain to work with.