Twisted Treeline Bug????

Was playing a ranked three's game on 10/14/14 and saw something I've never seen before. A large minion of mine was in the enemy base where a Wukong was fighting them off the nexus turret when all of a sudden about half of them broke oh walked past their wraiths, marched through mid back to our outer turret before returning to their normal path. Was a hilarious sight and didn't really affect the out come but just wondering if anyone has seen this before.