I just watched the first bit of that video and that isn't what I saw from the Wichita State bowler.
The linked video shows a swing slot like others here have described, shoulder down, arm directly below the shoulder and up toward the target with the follow through after the release. The arm will sometimes comes directly in front of the bowlers face or even a little to the left (for a right handed bowler).
I feel the OP was referring to an arm motion that comes completely across the body, at or even below shoulder level with the follow through. The young lady during the collegiate singles championship TV broadcast did it time and again. Her arm slot was not vertical in line with her shoulder and head(as in the linked video), it was at an angle that ended with her arm coming across her body.