It's definitely annoying, but cancelling into the ball stop is still advantage on block after most strings(not as much as invis, but enough that f4 should beat any normals after f412 or f21) so it doesn't take away all your pressure options and it has set up potential. They jump a forceball, you make them block a string and freeze the ball, then go into another string and start pushing them towards the stationary forceball. Use it like a temporary make shift corner.
If you throw them onto a forceball do you get a combo?