Ummm.. no, clone is clone.. an exact copy.
You might get some joy out of Ultramon. Never tried it myself so just a guess.
If in that situation myself I'd just make two presets, one with the TV as a single monitor and one with your 19" as a single monitor. If it boots to the wrong monitor just use the preset to switch and away you go.
#1: FX-6350, Antec Kuhler 920, MSI 970 Gaming, Powercolor R9 290X, ASUS Xonar D2X, GSkill (F3-14900cl9d-8gbxl), Antec Truepower New 750, Arc Midi, Win8.1pro x64
#2: MSI A88X-G45, AMD A10-7850K, Asus 5870v2, Antec900 case, AMD 2x4GB 2133 (R938G2130UK), Antec 750 True, 128GB Sandisk SSD, WD Black 1TB, Win8.1pro x64
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