Just kiddin' :-)
Yes, pull the string/note, that you just hammered, off in a downward motion, so it kind of snaps. Be careful not to pull to far or you'll hit other strings or cause string buzz on lower strings. Really, just practice a little more on trills, it shouldn't take more than half an hour of practice to get your pulls and hammers right. The real workout first starts when you want to use all 4 fingers for pulls/hammers with equal strenght and sound. Practice trills in all sorts of fingercombos with a metronome.
Don't forget the pinky, this sucker demands the most exercise!
Fiddles
Trolle
