There's no way a MATADOR can take this out from the front,
especially with the ERA covering it. Even a Spike might be of
questionable effect on it.
Best shot? Switch your MATADOR to bunker busting mode and aim for
the tracks, or go for a flank or rear shot in the none ERA parts
with the HEAT mode. Unless you are a brain surgeon with the LAW, I
doubt you can hurt it much.
In any case if you have nothing to counter it and it's coming at
you, to stick around would be sucide... as it has always been with
infantry vs. tanks.