Good afternoon Mike,
I'm Doug, and I'm sorry to hear of the confusion. My goal is to provide you with excellent service today.
Great question, and the answer is yes, you can.
You wife MUST file and suspend her benefit before April 30, 2016. Then on your reaching 66 you may file a Restricted Benefit application and collect a spouse benefit while both your own retirement benefit, and hers, continue to grow at 8% per year up to as late as age 70.
You are also correct in understanding that because you will not be 66 before May 1, 2016 that you have forever lost the ability to file and suspend your benefits. The only way that your wife could take a spouse benefit---restricted or otherwise----will be if and when you actually apply for and begin receiving your own retirement benefit.
You may reply back to me using the Reply link and I will be happy to continue to assist you until I am able to address your concerns, to your satisfaction.
I hope that I have been able to fully answer your question. Please be so kind as to rate my service to you. That is the only way I am credited for assisting you.
I wish you and yours the best in 2016,