Here is a pdf regarding cycle of tantrums rage and meltdowns. It has some helpful info. in it, Katy.
It's got a few good tips there even tough it appears very basic. Don't forget there are suggestions in the TS ones in the post up above... from the TS Plus site. This one below is specifically regarding Autism though.
http://www.researchautism.org/resour...tdowns_002.pdf