Changes in auditors are required by law to be reported. Disagreements between auditors and corporate boards are not all that infrequent, especially in Asian markets and can, as you say, result from a company restricting info available to the accountancy firm. But more typically the disputes are over the scope of auditor activities which are billed by the hour and often involve very expensive overseas travel in multi-national companies that a board of directors can prudently deem excessively costly.
If you are looking in earnest for the Boogieman then this 8-K might be important. If you are looking for answers as to Longwei's future, I think it is immaterial and premature to any conclusions except speculative ones.
I want to see something concrete before I make up my mind. I would not be at all surprised to see Red Chip re-affiliate once some of the dark clouds dissipate, assuming that they do. I have always valued their research and conference data; I will ascribe a lot less value to Red Chip going forward if Longwei tanks since they have been sending "buy" signals for 4 years and only reversed out of a contract extension a few days after the renewal announcement last December 28th.
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