I agree with the notion that 420 is the next support but "safe" is a real stretch. I closed out 1/4 of my short position around 425-426 but am more confident now than before that it will breach 420 and when it does there will be a rush to the 400 (or so) exit.
The real scary thing here is that BIDU has said absolutely zero on its own behalf. They are either IR idiots or there is something coming out that is just not good. Either answer does not create a "warm and fuzzy" feeling.