From the email that Cedega users received:
"Once this pattern was brought to Blizzard's attention, our staff worked directly in conjunction with the Cedega development team in a rigorous and thorough review of the situation. We have since determined that your account was one of those accidentally flagged, and as such we are immediately reinstating your account to fully playable status.
Blizzard Entertainment deeply regrets the error, as we understand that this brief account closure presented you with an inconvenient and highly frustrating experience. We remain firmly committed to enforcing our regulations and suspensions for those exploiting our game, in the interest of ensuring that our legitimate customers have the best possible play experience. In this case, however, we regretfully caught a handful of innocent customers in the process, and for that we offer you our genuine apology."
The unbanned user's accounts were also credited with some free play time as compensation for the event."