I've now tried to do this trick starting at 3:50 a several times and I honestly think that it's impossible to kill both worms from your spot.
Here's the summary:
If you wanna release 2 cows to the left and 1 cow to the right with a jump you got 2 possibilities:
1. You first jump and release the cow to the right, then turn around and release the 2 cows to the left. This isn't possible (in this spot) because you have to release the first cow in a very late state of the jump to be able to turn around before you release the second cow. The gap that you can overcome with this technique is very small; smaller then the given one.
2. You first release the 2 cows to the left, then turn around, jump and release the last cow. This isn't possible at all I think. You either jump too late (3rd cow doesn't "fly") or turn around too early (you already release the second cow to the wrong direction).
If you had 4 cows it would be at least possible to kill Almog's 2 worms, but it would have been really hard to survive this. The attached replay gives a clue of how you might be able to do it with 4 cows
All in all, interesting try