"Short orders will only be matched against asks that are below the moving average. (ie: people must be selling BTSX for less than $0.03)"
The statement is correct but its flipped logically. In order to sell your bitUSD(short) you have to find someone else willing to sell you BTSX.
Every trade has two sides. You're always buying something as well as selling something. You flip the logic depending on what you're pricing your statement in (bitUSD or BTSX)
So if you want to say something about a bitUSD short (which is by definition priced in something else, in this case BTSX) and price the short in its own unit(bitUSD) you have to flip the logic of your statement as reflected in the above quote... (which causes the word 'short' to lose its meaning)
The above quote can(should) be written with the same meaning using the logic and pricing implied by the word 'short'
Short orders will only be matched against bids that are above the moving average. (ie: people must be buying bitUSD for more than 33.33BTSX
I contend that in order to use the first quote and have it make any sense, a new word/phrase needs to be substituted for short.