Er, yes...but we don't want to go to the original #loop until Speed _man > 0.1, so if we're insisting on a 'looped if'solution:
#checkloop
~1
?((speed _man) =< 0.1): Goto "checkloop"
hint "The unit is no longer substantially stationary"
goto "loop"
It was also an unrestricted loop which is bad, lag-inducing practice; if we're trying to inform and educate (or be pedantic).
@ (speed _man >0.1)
goto "loop"
does the job in a far simpler way.