On fire or just stubborn?!? Hellllp :x

[Homebody]

If that was my setup, I would try to get it on the hide itself. It might hold heat better than the side of the enclosure nearby. Maybe someone else can pop in with more tips or tricks though.
Ball Pythons aren't typically a basking species so most go for the belly heat over a lamp for a primary heat source. So it's usually getting stuck to the bottom of the habitat and not a hide like that.

I don't think siliconing the probe to the top of the hide is going to work. The BP will dislodge it. I would suspend it a couple inches under the ceramic bulb. I've never used ceramic bulbs, but I do use a radiant heat panel (RHP), which works similarly. It's surface temperatures just don't get as hot. With that large an enclosure (4' x 18" x 2'?), you may want to consider switching to an RHP.