TAC Contact information can be found here: http://www.arubanetworks.com/support-services/support-program/contact-support/
I would call them rather than email to work the issue live. Grab the output of "AP tech support dump" fom each of your IAPs during the outage and be ready to send them to TAC. To get "AP tech suppor Dumpt" in the IAP WebUI go to More->Support-> then from the command drop-down box check "AP tech support dump". Save the output then repeat for the other two IAPs by selecting them in the Target drop-down box.
Tech support dump contains everything TAC will need to get started on the case (logs, configs,etc).
Are your IAPs getting their IP address via DHCP or statically assigned? Any possibility of Dup IP?