וַֽיְהִי֙ כַּאֲשֶׁ֣ר כִּלָּ֔ה לְהַקְרִ֖יב אֶת־הַמִּנְחָ֑ה וַיְשַׁלַּח֙ אֶת־הָעָ֔ם נֹשְׂאֵ֖י הַמִּנְחָֽה׃
E quando ebbe finito di offrire il presente, mandò via le persone che portavano il presente.
Rashi on Judges
He escorted the people. He turned back to accompany the delegation of Yisroelites who came with him to bear the gift. He escorted them until Gilgal.
Metzudat David on Judges
FINISHED BRINGING: After he gave over the tribute
Metzudat David on Judges
...AND HE SENT: Because with one it is easier to escape. This is not to for a group