It truly is much easier to just remove the remjet after processing when using manual methods. Just soak the film in a Borax solution warmed to the same as processing temperature. Let the film soak for at least 5 minutes. Use at least 2 tablespoons household Borax per Liter, more if the backing seems to stubborn. Due to the low cost, I use a fresh batch each time I process any film with remjet backing. Anyhow, it really helps to have a few sponges, photo grade or equivalent on hand and a film rewinder or set of rewinds. I have them mounted onto a 2 x 4inch board about 4 feet in length so it can be clamped to a work table or lab sink with a large C-Clamp. After the film has soaked, I transfer all the film from the developing reel to a 50ft projection reel. This reel sits in a small tank or tray also with a Borax solution. This way, the remjet will come off physically and less will get onto your reels and equipment.
I manually wipe off the remjet the first few feet so I have enough slack film to wind onto the film reel on the Rewinder. Then, I have a large sponge soaked with the solution placed so the film will run over it remjet side down. With another solution soaked sponge folded over the film, I slowly wind the film onto the takeup reel on the Rewinder, and every few feet I rinse out the sponge in a bucket and resoak it with solution again and continue. Keeping an eye on the large sponge the film runs over, I wringe out that sponge as well and resoak it. Once the film has wound onto the takeup reel, I then switch places and do this again. The second pass will get anything not removed the first time. Only thing left is then to Wash the film once again 2-4 minutes to remove all traces of Borax solution in the emulsion. Then to soak the film in a Stabilizer/ Drying agent prior to hanging it or winding onto a Film Drying Rack to dry.
For equipment cleanup, you can use old toothbrushes (soft bristle ones work best) and some Borax or Washing Soda solution and soak in a bucket, light scrubbing with the brush in the reels, and a good rinse off, and then wipe dry which will get off other residue onto the towel.
Once you have done all this a few times, you'll establish your own work habits for it and it goes quickly. Good luck!