I picked up a pickup truck bed full of stable manure and this stuff is HOT!

I was told the equine poo was a week old, but it looks older and like I said before, it's HOT.

Now I need to know what I should do with it. My original plan was to just till it into my garden plot, but I'm thinking I might need to actively compost it down due to it's heat.

So what does everyone here think? Should I just till it in since I won't be planting till April, or should I compost it down some 1st? The manure is stable manure so it's got lots of saw dust mixed in, but I can smell the urine. If I do compost it, do you feel I should add some brown to it??? I've got a bail of straw from last year that I can add if need be.

Thanks.