its just speedy controller work. quick sticks. you have to immediately press circle or whatever it is on XBOX to change to the nearest defender, and then (basically in the same movement) you have to super-fast hit the hit stick. its not a cheat, or a glitch, or anything. its normal gameplay, pretty realistic too, especially with how easy passing is this year, the hit after the catch is important.
i've been trying to remember to hold R1 when i catch the ball in traffic because i know ill get hit, so i was hoping it would hold on to the ball... but i havent been effective with it yet. just make sure you watch what your WR is running in to when you throw to him. if you see a defender waiting on the receiver, maybe try a different option.