Diana and Frank;
Sorry to hear of your loss. Majestics are difficult to come across in this hobby. It looks and sounds like it was an internal parasite which could exist in your system or the system where you purchased the Majestic. My suggestion would be a reef safe additive to food for parasites. I was thinking along this line just not this product.
http://www.petsolutions.com/default....47170&SID=SPCM
Hopefully this helps you in your research.
Good Luck.
Kevin