To overthrow a King, Jordan is safe, he can get away with it with a dictator but not a Royal family. The problem now is whether the GCC will make Jordan cancel the peace accord when it joins the GCC as a requirement. Jordan shift from the US to the GCC is a matter caused by the US and Jordanian fear, after what happened to Mubarak at the hands of the US.
Saudi-backed forces advance on rebel-held province in Yemen (DPA)
from the article: Arab Spring showed its real face in attack on Israeli embassy in Egypt