DannyLee,
I see you are in Houston, which is a pretty humid, warm environment. If the cue was sent to a colder, dryer climate (like here in Denver) that can affect the wood. Also, when the cue was refinished, that exposed the underlying bare (or nearly bare) wood. The wood is naturally going to try to acclimate itself with the surrounding environment. The old finish acted as a barrier to slow down the rapid loss (or gain) of moisture from the air.
I doubt that it was left bare very long, but wood is wood and has a mind of its own sometimes.
IF this is indeed what happened, I wouldn't say this is the fault of the cuesmith. Others have seen cues warp in the cargo hold of an airplane.
And you cue may straighten itself out - that has also happened.
My 2 cents,
Gary