The picture is fairly low quality but I'd say that the heels are definitely too long.  Bars should be trimmed when excessively long, but I've found that as long as they aren't too long, they can be left alone. I've seen more problems from trimming the bars too low and causing problems that way too.  They are there for a reason. My horses have long since shed the bars once their feet transitioned completely, and I rarely have any to trim.  With laminitic horses it's especially important that the bars are not left too long though. Anything that causes pressure on an already sore foot needs to be avoided.  As I said, I judge by running my hand over the whole of the foot and if I feel a spot that comes up over the trimmed and beveled walls, I bring it down. If the foot hits the ground, the bars should come into passive contact.  Just make sure that they do not get trimmed below the live sole.  Pressure on the walls is what causes separation.  The bars being left long may cause soreness that will cause the horse to walk on the toe instead of the heel. This can lead to separation, not the bar itself. Lowering the heels will go a long way to helping. Make sure you don't trim them down below a safe distance. The collateral groove will tell you how far you can go without getting into the lateral tendons and ligaments and causing soreness  Pete Ramey's book and Jaime Jackson's books are a great place to start with understanding how the collateral groove measurements can assist you in assessing just how much is safe to trim off.  Your horse may never have perfect heels.  They may always be contracted somewhat, but if your horse is sound and remaining that way, then it's where that horse is going to be.  Trying to force the horses foot into something that it isn't will only cause lameness and reluctance to walk heel to toe.

 

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