Before we all go Nova and start using $ymbols instead of letters, take a deep breath.
Ema probably wasn't in trouble for his character sheets. He was probably in trouble for his auto-filling character generator which stored PC data on his website in a fashion similar to (though pre-dating) WotCs.
There has always been a "software" clause in the SRD. WotC has turned a blind eye to HEROforge and the like because they were free. Ema was charging (abit a small fee used to webstorage) for his char-gen, which seems to violate WotC's good-natured policy.
Why now? Well, maybe its because WotC has competing software (in a different edtion) and they wanted to make sure no one uses the OGL/GSL to make a 4e Ema site to compete against WotC's DDi.
Does it suck, yeah, I guess. But before anyone goes off about TSR or "that other Washington-based company", keep in mind They were probably looking at a direct competitor, not fan-sites in general.