I figured he might lose his mind if you tried.
If it's clotted and not bleeding in the morning, I would leave it alone then. You risk disturbing the scab and causing it to bleed.
I have them heal up just fine without any complications, but there's always a possibility something could...
The Blue Kote probably stings.
Is he still bleeding? It will usually stop and clot on it's own. Sometimes I don't do anything to a broken spur, other times I may wrap.
In your case, it looks like it may be torn and quite a bit of quick is exposed so he will be very tender for several days...