Tim,
I am sure a lot of us want to think of you as an elite donor rather than part of the problem.
You could send a plan to the museum and follow up by sending your own experts to obtain a copy of the images. As you have indicated via a lawsuit you don't believe TIGHAR the best outfit for doing this. "Discovery" would be making sure an outfit you are in doubt of got what was needed by doing it yourself.
You should also consider that slowing down TIGHAR is going to make it take years longer to find a part of the aircraft that can be recovered to prove to the world what really happened. I am grateful for every sunrise and know people in ill health that are also grateful for every additional sunrise they get to see. What they do with the extra sunrises is up to them, but, they sure enjoy every single one knowing our time is limited. It is the simple things like driving them home from the hospital and they have their hand in the breeze enjoying another day. In no way do I wish to rub in the reminder you got about our limited time on earth. I am just exposed to enough of it first hand recently that I think everyone should think about it instead of taking life for granted so much.
You have the ability to fund a complete expedition, fund better equipment, a better boat, and more time to try and find a part of the aircraft for recovery and proof. Perhaps you have resources (people and equipment) that can be put to tax deductible use at PanAm Systems that you are the Chairman of. If you 100% fund an entire expedition I don't see how anyone would object if you and your expert hand picked staff were in charge of and ran it. Could also be another future profitable division of the company dedicated to underwater search and recovery.
The 2012 expedition is leading the way to what new known problems have to be solved esp. with the underwater terrain.
You could also start your own website and forum. *Groan* I can hear some poor sap in your IT department getting this assignment already.

You can watch from the sidelines.
It is a free country and you can do as you wish. You already have your name known as a elite donor aka "part of the solution". The lawsuit makes you "part of the problem". How do you want to finish this chapter for others to read? I just happen to be reading an unfinished and entertaining book.