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Any of the spider morphs can have a wobble or roll problem. Spider, bumblebee etc..
I wouldnt consider it a problem unless it is bad enough to interfere with feeding, drinking, moving etc.. I have only ever seen 1 spider with it that bad. I have a bee that never shows any sign of a wobble until its feeding time. Then she just vibrates her head when she is zeroing in on the rodent. She usually misses the first strike but once she has it she coils and then eats it as fast and normal as any of the other snakes do.
If its something you are concerned about just ask to see the snake eat before you buy it. If its an online sale ask for a short video. Of course if it is a reputable breeder with some feedback you can usually trust the word of the breeder on how bad the wobble may be.
Just remember the "spider" wobble could be bad as a baby and get better over time. Or it can be completely un-noticable until some point in adulthood. If its a very bad wobble though, you would know right away.