Maya is easily overwhelmed by Sanderson, to the point where she needs to transform to fight him off. However, in previous episodes, she has demonstrated superhuman strength, sufficient to lift Tony off his feet without any sign of exertion.
After Eagle 1 crashes on the planet, Maya states that the "transmission system" (or transmitter) is not functioning, which prevents Koenig from contacting Moonbase Alpha.
Sandra confirms this with her readout of Eagle 1's damage report in Command Center(!).
If Eagle 1's transmitters are not functional, how is Sandra able to get a damage report, never mind that Alan is able to use the remote control console in Command Center to pilot Eagle 1 back to Alpha.
(Alan even says he's "getting feedback from Eagle 1".)
At about 43:00 in, Koenig and Sanderson are grappling on the lunar surface in spacesuits and Koenig throws Sanderson. When Sanderson lands and rolls over, his helmet visor is ajar, which in real life, would result in the air being sucked out of his spacesuit.