I'm no lawyer...but...
Making the images available for licensing is not where I think the 'problem' lies...the 'problem' (in quotes because I am not convinced there is one...based on what I know so far...please read on...) will be the context of publication and the responsibility will lie with the publisher, not the photographer.
Two questions spring to mind:-
Are there any terms of restricted use stated on the Getty site? (the images might be restricted to editorial - ie "Alex Tattersall in India to promote university" is editorial use. Its a statement of fact)
Does your likeness/image have any proven value?
The latter point is not tongue-in-cheek. Eddie Irvine secured £25k damages for his likeness being used in an avert without permission:-
http://www.brandrepublic.com/news/175837/Eddie-Irvine-wins-25000-damages-TalkSPORT-appeal/
Original damages were £2k...but as Eddie stated that he "Wouldn't get out of bed for less than £25k" higher damages were awarded on appeal.
So the question is thus; Do you have a proven track record, such as paid invoices, showing how much you can license your likeness for advertisements for?
If yes, and its big enough to justify speaking to a lawyer then...find a lawyer.
If not, then I would forget about it.
But this post does highlight the value of obtaining signed model releases...even more so if there is any hint of images being used for commercial purposes other than editorial.