If it makes you feel any better I've done that once too. For different reasons though.
For me, it was a day that I "really" awoke much, much earlier than my normal time. I didn't temp, but 2.5 hours later temped twice, half hour apart (dozing in between). My first temp was higher (probably from not returning to resting temp fully) and then another temp was a bit lower ~0.3 degrees difference. I took the lowest temp.
Well...since it was during the 2ww I figured the lower might be more .... real. kwim? The first seemed too high! I probably should've kept the high one!