Bulldozing - allowed?

[Mullen]

i asked the head ref at GLR what the ruling on driving along the wall to knock the tubes over was. he told me that it was legal as long as we just knock them over by driving by, but if it appears that we are attempting to control them and move them to certain spot it would be illegal. it would also be illegal if we had another tube in our possession. we used this strategy in a match and no penalty was called. this looks like another case of rules being interpreted differently based on the refs.