When your config has a non-existing ALSA audio card, then quite probably PA will quit and get respawned by dsme until dsme thinks it's enough and reboots system.
1. pactl load-module module-alsa-sink-old sink_name=sink.hw2 device=hw:1 rate=48000 fragment_size=1920 fragments=4 alt_fragment_size=960 alt_fragments=2 2. pactl move-sink-input 2 7 (2 is nokia-music, 7 is newly registered sink) 3. playing music using maemo media player - nothing happens no sound and it doesn't advance 4. pactl move-sink-input 2 2 (returned to normal setting) - playback works