1. blur animation when stopped?!?! what you mean?!?!
2. this code you've wrote is a "how to see" setting from me to target (floor under my feet, wall fron of me... etc). If you cut this out (don't do this) your colision detection doesn't work and it is your answer why model is halfway the floor
I see that you are really Newbie... so best way to learn will be reading help, function by function you can see in click & go script or enother simple wdl with moving, tracing, targeting, animating... etc.

Even the longest way starts with first step - old China's proverb.