Replacing sump... Need advice and help

[Steve'o]

Hi all,
I got a new sump for Xmas, and now I need some advice on how to get my old one out and the new one in.
Got the aqueon model 3...nice looking sump which I intend to do a refuguim in.
So here is the problem, my existing glass sump is in a wood and glass cabinet under my 90 gal tank. There is a main support 3" support in the middle outside edge that the sump is tight against.
The only way to get that support out is to undo bolts on top and bottom of stand...so that is out of the question.
Any advice?
Any help from someone local who could help?
Really appreciated,
Steve'o