I don't think that SwissNeutral was in anyway attempting to suggest that the options they outlined were the only options available to BA should a strike occur. There may well be very many options available that have not been discussed here, BA do seem to have a very capable team in place to manage this dispute and they seem to make some unorthodox moves that catch BASSA somewhat flatfooted.
One thing that is worthy of restating is that should one find oneself sacked in relation to IA and seek justice at an Employment Tribunal is that a re-instatement order is seldom made and is unenforceable. At best a re-instatement order allows a slightly higher compensation award to be made. Either way, if one should find oneself sacked by BA during such a period of IA the chances of getting one's job back are exceptionally low.