Spatial judgments made from a third-person perspective (3PP) are assumed to suffer interference from the first-person perspective (1PP). A component of this interference likely results from spatial stimulus-response correspondence as target stimulus features likely activate spatially corresponding response codes via a “direct” or “unconditional” processing route. Previous findings of particular impairment when switching from 3PP to 1PP judgment have been taken to reflect (reactive) inhibitory control (i.e., aftermath of suppression of 1PP processing when making a 3PP judgment). To investigate both reactive and proactive control in 3PP processing, we applied a perspective switching protocol which, on each trial, required a 3PP judgment (a.k.a. own body transformation task) or a 1PP judgment. The relevant perspective was indicated by a cue presented 1000 ms in advance of the target stimulus. In a proportion of trials, however, a Simon task was presented instead of the 1PP or 3PP judgment task indicated by the cue. To assess reactive control, we compared the performance cost of switching between perspectives. Consistent with the inhibitory control account the switch cost was larger for 1PP than for 3PP judgments. By contrast, performance in the Simon task was not worse after 3PP trials than after 1PP trials, dismissing a sequential difficulty interpretation of the switch cost asymmetry. Moreover, preliminary evidence for proactive control (i.e., suppression of the direct route during preparation of 3PP processing) was obtained in the form of a trend reflecting a larger Simon effect after 1PP cueing than after 3PP cueing.