I also think it is not worth the trouble.
But of course if TS wants to try, he is welcome to. But it won't
be as easy as he thinks...like what I said, old wounds would be
opened and some not very nice things will be said and insults would
be galore...
Money is always the root of all evil...I hate all this kinda
inheritance quarrel. I rather wash my hands off it and lead a
simple but peaceful life. The other side, if they want to laugh at
me, they can do as much as they want as long as I am contented with
what I have.
Same here, I think if he wants to try, then go ahead, it's not
like I am going to lose or gain anything. 
For me, it's not about the insults, people can say all they
want, but it's more about what is morally right and wrong. If say
the dad really did leave TS the house, but the step brother cheated
him out of the house, then I say by all means take him to court,
but it's not the same here.
I have seen too many families disintegrate because of
inheritance issues, but this is not related to TS because he is not
on close terms with his father and step brother.