Spin cycle?

When the washer hits the spin cycle, it will start out properly, the drum spins, it spits out the last gallon or two out of the filler to finish the rinse, but about when it hits the first quarter of the cycle, the water is being pushed back into the drum, and I start hearing something that sounds like a break rotor on a car when there isn't anything left on the shoe, and is continuously dragging. And at the end of the cycle, only about a quarter of the water is actually drained out, but I know that the pump is still working, because I can hear the water going to the drain. Any suggestions?