I would just use a spreader(fork) and an air chissel. (if you have an air compressor of course) For both you are talking about $50, which happens to equal the cost of a tie-rod. This is the safe and correct way of taking it off. You will not damage the boot or cap with this if you use the correct size and follow the directions. If you need to hammer, use a dead-blow or brass hammer. This will prevent you from messing up the threads too.