Maples is a double murderer who was represented by the big-name New York law firm of Sullivan & Cromwell for his state collateral review petition. However, the big shots blew the deadline to appeal because (1) they didn't bother to inform the state court of a change in the attorneys handling the case; (2) the firm had a strange policy of not letting the attorneys use the firm name in their appearance -- even though the firm touts the work on its web site; and (3) when notices of decision addressed to the individual, departed attorneys arrived at the firm's mail room, the mail room sent them back to the court.
On "the extraordinary facts," it is not too surprising that the Court answered the question "yes." See my post after the oral argument. As predicted, the resulting precedent is narrow, at least for the time being. One aspect of the opinion that I find particularly disappointing is what it does and does not say regarding who is to blame for the mess.
First, and most importantly, is the narrowness of the opinion. The Court does not back off from Coleman v. Thompson. Attorney error in habeas is not "cause" for default, even something as basic as blowing an appeal deadline. "We do not disturb that general rule." Abandonment is distinguished from error. Look for petitioners' briefs to push an ever-expanding definition of abandonment from this point onward. Hopefully, the courts won't go for it and not much damage will be caused.