Tsuande chased after Deva.
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This isn't to she was directly behind him, however she wasn't the location in which you've portrayed her to be. Again, you speak of figures, yet ignore that Tsuande and company survived this with no Intel and in midst of chasing Deva. Certainly considering whether or not she used a summoning, the transition to countered occurred after TS was used. This leading me to because Manda could very well be summoned as a possible shield. We've seen Manda submerge underground nearly instantly. That throughly allowing them to only encounter the debris, not a direct hit.
Also, Deva using that technique directly over the battlefield would be harmful for the other paths, leaving him vulnerable, seeing as this slows their recovery time and he'd be defenseless. That is
if someone from team snake would survive.