First of all “out the hole” means leaving the blocks or out of the gate.
One of my sprinters has good strength levels and her form from the side view is good. However, when you watch her from the front you can see that 8 out of 10 times she pushes out to the left a bit (moves to the left side of the lane), then straightens up and runs.
She pushes off with her right foot by the way. Is this lack of explosiveness, leg strength imbalance?
Remember she is very strong for a 14 yr old.
still hoping to get a response
Rocking side to side is often seen when the arms are carried too far back comming out of the blocks.
thanks CF for the response. I will watch for that.
Sorry so slow. Been on vacation 
What does that mean? Driven too far back? Broken at the elbow?
my understanding of the terms is as such…
sometimes an athlete will attempt to drive the arms back as hard as they can and will lose control of when to stop the momentum and bring the hand forward. As a result, this exxagerated motion causes poor backside mechanics for both legs and arms. Although this aspect of BS mech is quite natural during early stage of acceleration, it can cause slower than normal leg recovery.
Broken at the elbow generally refers to when the arm swings back, the 90 degree angle is more like 160 degrees open. So in other words, it looks more like an obtuse angle than a right angle.
Hope I answered your question.
Oh yeah, CF…
We worked on that aspect and it corrected itself immediately, Thanks again. 
Thanks. I knew what Broken at the elbow meant I was just wondering if the two terms were interrealted which I believe they may be.
I think they are related but not interchangeable.
Some have broken angles when their arms swing forward. My coach use to call it “rope-a-dope”. The arms would move out forward away from the body and pull straight back.
In doing so, I notice that the athlete seems to do the other dance, “the twist”. Of course we are referring beginner athletes. Although I have seen some pros do this when they are tired.
For example, I think her name is Lashawntae Moore (fine as #@!*, love to meet her) . She beat De De Trotter (dido for her too) 
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L. Moore does this on the final 100 of her 200.
have her workout not in the lane. but ON the line of a lane. you can moniter her movement easier.
Thanks for that Charlie, one of my guys has a lot of lateral movment over the first 10m and he appears lethargic. I’ll take a special look at his backward swing, he could well be overdoing it.
be careful not to apply what he is saying incorrectly. Remember my athl’s issue was not over 10m, just the first two steps out the hole.
In my experience we have called your athl problem the football player look. They deliberately, in some cases, attempt to take these wide steps when they accel. Sometimes they just don’t know the shortest distance between two points in a straight line, sometimes it is because of lack of knee lift or hip mobility.
Thanks sonic, I’m looking at his hip mobility, good point my man.