There have been some rumblings of discontent in the past - Saga especially had dropped some serious hints that he was unhappy with the songwriting schedule that PSC had them on. (Alice Nine was pretty much expected to produce some sort of product every February/March, at the very least - at least one album or a couple of singles a year). There were also some fan theories that the company was interfering with the band's music. I don't think anyone really expected this, though. The fan reactions have been a mixture of shock and pleasure - PSC isn't exactly well-loved. (Well, I don't think they're well-loved by ANY of their bands' fans).