Will a 301 redirect pass Penguin/Panda penalties?

Here is what my client wants to do: After years of ranking in the top 1-3 for his primary keywords, traffic for domain A started to drop gradually at the end of February this year and then dropped massively on April 24th. He has owned domain B for years but has always forwarded it to domain A. What if he moved the site to domain B and used that as the main domain and did a 301 from domain A to domain B. Would he be able to wiggle out from under the Panda/Penguin penalties, at least until we can fix the site? Anyone have any thoughts on this?

Thanks,
C.

It's debatable. Some people are successful doing 301 and some did have some success and then the penalty passes to the new domain.

If you were initially hit at the end of Feb, then I'd guess it's a Panda penalty, correct? Do you happen to know the exact date when it dropped?

Don't go from B > A.

Just keep things the way they are and remarket the site. Everything is 100% speculative, just make sure the site is on-site optimized and user friendly. That's all...