Well first off,my colt was the same,he would turn his ass to me as a way to avoid me,and was just generally being naughty.
First thing,no matter if he comes into you or acts up is consistency,every day and eventually what your asking will click.
Then I took him and a whip and beat the living day lights out of him....lol no I am kidding
Ok so you get your lunge lead,or even a lead at this stage and a whip.
Then you circle him around your body,hold him about an inch or two from the clip,you might have to pull him around but make him do it,while doing it get the whip and tap his bum lightly,or crack it behind him to get some foreward momentum.
Keep practicing untill he is happy to walk or trot around you without the need to pull him along,then let the lead out a bit longer,and keep doing the same thing.
Like I said...every day is needed for them to get it,and eventually he will be lunging at the end of the lunge lead....thats what I have done for all of mine and they lunge great now.
But only teach one side at a time...no point forcing the issue on both sides till he fully understands one side.
Or if he starts lunging then just turns into you,you need to drive him away with your body.
By this I mean sort of "lunging" foreward towards him....hmmm best way to expain it is to take a big step foreward while pushing your arms towards him,so you have your arms at your side and lift them up infront of ou towards him.
I find this drives my horses back,sometimes more force is needed in the step and the arms and other times all I need to do is take a small step and they know I mean business.
Also horses rely alot on body language, if my horses are leaning in on the circle,I flick the whip towards their tummy and they go back out,if you want ahorse to move foreward,you drive it from behind,if you want the to move their bum over you would flick the whip behind their flanks.
If you want a horse to slow down,you relax your body,arms by your sides and sorta slink down a bit,if you want them to go faster stand up straight.....you can do alot with horses with body language alone.