Correcting the Imaam in fardh Salaah

Q: Is it permissible to correct the imaam during the qiraat in fardh salaah:

  1. If the imaam makes a mistake which changes the meaning of Quraan?
  2. Imaam jumps to another ayaat and realises this. So the Imaam starts at the beginning of the ayaat and still does not get it right?
  3. Imaam gets stuck during recitation?

​Please explain also in respect to the 3 ayaats being read at this point and also if not?

Husband telling the wife "go and don't come back"

Q: I had to go buy stock for the company I work for and I was scared to tell my husband this because he would badger me about doing things for the company so I told him a lie and said I went to China Mall for myself instead. On numerous occasions I did tell him the truth and informed him before leaving the garage but he always used to fight with me saying that I should not do anything for the company. On one occasion he even came to the garage and caused a disturbance.  I almost lost my job but thankfully my manager spoke on my behalf. On Saturday, 1 February 2014 I went home after work my husband told me in front of his mother, father and uncle that I must leave and not come back. I need to know what is the status of my nikkah as per shariah?