The problem is that what you want is to double count in the ALL row (actually "up to ten" count), for which tabulate does not provide a mechanism.
I suggest a data set VIEW with a new variable, to be included in the proc tabulate.
data vneed / view=vneed;
set have (keep=columnvar rowvar1-rowvar10);
row_count=n(of rowvar:);
run;
proc tabulate data=vneed;
class columnvar rowvar1-rowvar2;
var row_count;
table rowvar1-rowvar2
row_count*sum='Col Total'
,columnvar;
run;