is the natural impulse to try and 'hit' something with our dominant side when trying to propel something by striking it. It does not have to do with the type of swing you use; you will have it with any golf swing wether Redman or other.
Bertholy says that the symptoms of the hit impulse are:
1) Trail shoulder roll
2) Trail arm thrust
3) Trail wrist cast
'Trail shoulder roll' is an initial movement of the trail shoulder towards the target line prior to the vertical drop of 'Keystone' that drops the club under the plane.
'Trail arm thrust' is a straightening of the trail arm at the elbow that eliminates the bend (bent like a dog's hind leg) and increases the angle between the lead arm and the club
'Trail wrist cast' is a straightening of the trail wrist
Each of the three symptoms of hit impulse will likely put you over the swing plane and make it impossible to approach the ball from the inside (reference my quote from the Masters).
If you do almost any swing correctly you will not do any of these 3 things, however for nearly all one or more of the 3 lies in wait needing little to release them.