I reread the letter and whoever wrote it did a good job. He requested a discovery within 10 days and so the court and UST are obliged to reply.
According to him, class 19 (P and K) lost 1% of any recovery because of more shares for the underwriters. Common is not affected because the underwriters were assigned to class 19 only.
So if my recovery is 1M, I will lose 10K to the underwriters. If my recovery is 100K then I will lose 1K.
His other concern is that any interest income from legacy WAMU assets may be diverted by the corrupted Kosturos to TPS.