In the console, type
wallet_account_order_list
This will show all your pending orders. Your shorts will show up like this:
"*hex id*",{
"type": "cover_order",
"market_index": {
"order_price": {
"ratio": "*margin call rate, satoshi-based*",
"quote_asset_id": 22,
"base_asset_id": 0
},
"owner": "*address*"
},
"state": {
"balance": *open amount in satoshis*,
"last_update": "1970-01-01T00:00:00"
},
"collateral": *collateral in satoshis*,
"interest_rate": {
"ratio": "0.",
"quote_asset_id": 20,
"base_asset_id": 0
},
"expiration": "2015-06-01T11:12:13"
}