removing an array from a compound array

I have a compound array, that is, an array of an array of an array, etc, that is about 5 arrays deep. I currently search thru all of these arrays, and based on some criteria, I want to delete one of the arrays (along with all of its sub-arrays) in the middle. What is the easiest way to delete such an "embedded" array? array_splice() looked like a possibility, however, it requires that I specify the array for removal by using offsets which seems odd to me. Isn't there a way to remove array A from array B? Thanks, -Andres