The phrase "reels back in" implies a sudden or violent backward motion, typically in response to surprise or shock. Its antonyms, on the other hand, would be words that connote steadiness, control, and lack of movement in general. Examples of such antonyms include "holds steady," "remains composed," "stays put," "standstill," "unflinching," "steadfast," "firm," "unwavering," "calm," and "composed." These words indicate a sense of stability and composure, in contrast to the sudden and erratic movement implied by "reels back in." Whether in a physical or emotional sense, the antonyms of this phrase denote a steady, unwavering state of being rather than a sudden loss of balance or control.