This is a non event (cancellation of self-registration). If anything, it's a positive sign - RAD no longer needs the access to the emergency cash so it closes the funding source to stop this expensive option.
The deal will close. It will be a split decision among the two FTC commissioners (which is still an approal vs outright 2-0 decision) with the republican chairwoman casting her yes vote. WBA will only do the absolutely necessary minimum to gain the approval. As it stands now It still leaves room for further negotiation even after certifying the compliance. Worst case, it will force RAD to agree an again lowered price to close it out (a guess is between $5.5 to $6.5/per share). RAD will comply because of lack of better alternatives. Chances are it won't need it.
Shall we see in 60 days!