Alice measures the spin of her electron on the x axis. She now knows the spin value of Bob's electron on the x axis at time T0. Bob measures the spin of his electron on the z axis. He now knows the spin value of Alice's electron on the z axis at time T0. The two meet up and speak, knowing both the x and z values of their electrons at T0, contradicting the uncertainty principle, which states that an electron "doesn't have" both the values at the same time.
There is obviously something wrong in what I wrote. What's that?