From my experience, most of the dev times for Tmax 3200 will give you more of a 1600 result than 3200 anyway. Besides that, yes, you can pull the film - but what you describe seems to be a process that will not give you any adventage I can see (in my humble estimation - I do hope someone else chimes in with more experience). If you shoot the film at 3200 and develop it at 1600 you will have thin negs unless you overexpose your shots - and in that case, why not just soup for 3200?
I am wondering - what is it you are trying to gain by doing this? (I'm not being snide - I am just wondering if maybe there is a glaring obvious answer that I am overlooking)
Either way, best of luck,
Peter.