Theres nothing at all going against a 4.3.3 jailbreak, Comex has said it didnt remove his exploit and he is obviously still releasing it.
As long as you save your shsh and dont upgrade there is no reason to worry, its only people who dont follow jailbreaking who might nonchalantly upgrade to a potential 4.3.4 who could lose out.
And thats if if apple does scramble the programmers to immediately do so even though iOS5 has fixed it and is not that far away, which they probably will but isnt an absolute certainty.
Actually will probably just get it to us faster if Comex really is going to go into overtime mode here and try to beat any patch... not that its a good thing that someone forced him to deal with that but its still true..