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If it idles ok in park and neutral but wants to keep pulling when you come to a stop in gear then your torque converter is most likely staying locked up.
In the front of the torque converter there is a disc clutch that is turned on and off to give a mechanical lock between the engine and transmission, lower RPM's and raise fuel mileage.
If the converter clutch stays locked up when coming to a stop then it will either feel like the car wants to keep pulling or it can sometimes kill the engine. Possible causes would be the torque converter itself, a sticking valve in the valve body or a bad solenoid on the valve body.