[Robby]

Doesn't G09 apply?

<G09> POSSESSION - ROBOTS may only have 1 (one) GAME PIECE in their POSSESSION at any time during the match. Inadvertent bulldozing of GAME PIECES while the ROBOT moves around the field is allowed. Controlled "herding" of a single GAME PIECE lying on the floor is permitted as long as no other GAME PIECE is in the POSSESSION of the ROBOT. Herding of multiple GAME PIECES, or herding of a GAME PIECE on the floor while in POSSESSION of another GAME PIECE is not permitted (as this would be considered POSSESSION of more than one GAME PIECE).

Because aren't you in possession of one and using it to herd another tube?