Acer platanoides 'Crimson Sentry' Tree

BenDover

Have a Acer platanoides 'Crimson Sentry' Tree that has been growing in the corner of the garden for about 5 years.  Probably now around 15 foot tall.  However, although the habit of this tree should be bolt upright, after about 6/7 foot (above the fence line), the main trunk has developed a kink so has grown sideways and then reverted to growing upright again, with the result the top end of the tree is now out of alignment by about 2 foot with the bottom half. Looks wrong and certainly now means that the top half of the tree is overshadowing the border underneath it.

I am wondering if the best way of dealing with this is to cut back the trunk at where the kink starts in the hope is that it will grow a new leader that goes straight up.  The only concern I have is that the tree will take umbridge to that and just grow sideways in all directions and turn it into a large shrub, which is not what I want as I planted it to block out the view from the neighbours windows at the house that is located to the back right side of me.

My only other alternative is to have done with it and remove it completely.  To be honest, I think I planted it in the wrong place anyway.  It is in a fairly shaded corner so with it being dark leaved it draws even more light out of the area.  The lower leaves of the tree from below fence line to ground also are reverting to dark green and are not crimson which I guess is caused by the lack of light.  Top half is crimson.

If I did cut it back, I'd do it in winter when it's dormant - not now whilst it is in full leaf.