Need an expression that pauses composition playback while there is no position movement

I've got a looping composition using time remap and LoopOut.

The composition moves randomly from one position to another, then stops (for a random amount of time), then moves to another random point (like a bug crawling around).

I'm using this expression for my position:

moveMin = .3; //minimum move time
moveMax = .7; //maximum move time

pauseMin = .1; // minimum pause time
pauseMax = .5; // maximum pause time

minVal = [transform.position[0]-200, transform.position[1]-200];
maxVal = [transform.position[0]+200, transform.position[1]+200];

seedRandom(index,true);  // set pre-run for endT
endT = - random(moveMax);

j = 0;
k = 0;
while ( time >= endT){
  j += 1;
  seedRandom(j,true);
  startT = endT;
  if (j%2){
    endT += random(moveMin,moveMax);
    k++;
  }else{
    endT += random(pauseMin,pauseMax);
  }
}
if (j%2){
  seedRandom(k,true);
  endVal = random(minVal,maxVal);
  seedRandom(k-1,true);
  startVal = random(minVal,maxVal);
  ease(time,startT,endT,startVal,endVal)
}else{
  seedRandom(k,true);
  random(minVal,maxVal)
}

I'm trying to have the composition pause/freeze playback while the layer is stopped.

Not really sure how to go about it. Any suggestions or help?

Thanks!