if I may, it seems like there's three possible solution to the minigame problem. Solution 1. Would be that the table hit boxes are too big, meaning that not only do the blobs get stuck, they also are invincible. In this case, I would just reccomend decreasing the size of the table hit box.
Solution 2. Blobs are invincible in their sliding animation, in this case, I would really just reccomend putting a cap to the I-frames a slime can have, so if they DO get stuck the player can at least kill them.
Solution 3. Fix the magnetism the blobs have. If the blobs get stuck, cap the number of frames a blob can be stuck in the sliding animation and then if the cap is reached, have the blob pushed away by the object. In this case, the player SHOULD relocate to a position where the blob would not want to touch the table again.
These are just my three solutions.