Mars return- during the retrograde period

214red

I was looking at some past transits, and i noticed my mars return in november 2011 brought a few big changes, when i continued to review the path of mars i see that it conjuncts my natal mars a further 2 times , once in march 2012 retrograde, and one direct in May 2012.

I know mars is not usually in one sign for so long as it sits in virgo for 8 months, can anyone fill me on the significance of this? I have read about Mars returns, but nothing like this, does it change the way the return works , or will it just be longer in duration ?