Simmens new that sanc wanted to war them... They made their intentions clear and obvious before simmens did anything. Sanc was waiting until simmons left fortified and when they did they waved them within 5 min of them leaving fortified. The fact that they were stupid enough to go and wave another KD to hostile isn't sanc problem.
I don't buy the whole "we're scared of this KD that has made their war intentions on us clear so we will wave a KD within 1 min of leaving fortified and then cry "hostile" when we get waved by the KD we should have warred."