I did this, for fun.

I had to use the Green Gate Glitch, to get in position.

you can enter the tube without breaking it, if you morph and go to the far right unmorph and move you will clip into the tube

So while I'm standing on top of the tube like this, I morph, go to the far right, then unmorph?

Yep. I wasn't aware of this, but here's a video of it:

You not only have to unmorph, but then stand up.