I guess a picture is worth 1000 words here
The silicon couplers and clamps are used if you're using the stock DVs with an aftermarket charge pipe. The coupler goes over the open end pictured below. You can also see the indents that are used to lock it in place on the stock CP.
The locking collars are the grey pieces shown below, they're actually locked into the stock CP and not removable. These aren't duplicated on aftermarket CPs most likely due to the complexity of their design, and the difficulty in getting them off the stock pipe.
Sounds like the wording of the instructions included with the aftermarket CP's need some work, they probably mean break the DVs loose from the stock CP, by rotating the grey collars clockwise. It's just a little difficult to do this since the collars are a pretty tight fit and require some force to get them to rotate.
The right one is in the unlocked position, left one in the locked position. To reinsert the DV's, just turn the collars to the locked position, then push the DV in; They'll snap into place.
FWIW the BMS one looks like it locates the DVs in the same spot/orientation as the stock CP, might be your best bet.
Hope this helps