I cannot find the web page of MBNA Alaska MasterCard on MBNA Canada website (it was there yesterday). There is no more GCR bonus for this MasterCard either. If you search the https://www.alaskaair.com/, the Canada Alaska credit card page is also empty. So, I guess we may not be able to apply for this MBNA Alaska MasterCard anymore...
PS: A friend of mine just told me that right now you can still apply MBNA Alaska MasterCard through the phone (1-877-428-6060). If you want to get this card, please do it ASAP.
Updates: this card is back. Please see link:
http://www.canadianrewards.net/2017/05/mbna-alaska-mastercard-is-back.html