i bet if it was a snow trac or krusty it wouldn't have got stuck
depends on if you get them out of the workshop... but I'm also quite sure that a Thiokol 1200 series or Thiokol Super Imp or a Thiokol 600-series wouldn't have gotten stuck in that same snow/terrain situation.
ok i will admit that's a little more work than the st can do i just was running an experiment but judging by my private messages iit didn't work.Here is a 1200C doing its job almost at idle and it pulled the semi out