Escapes has the wrong connotation I think. The technical term is "reverses". The attitude you are describing is incompatible with the situation where the attacker reverses with the intent to cause you harm.
Rolling out of ikkyo is not a reversal, but an escape. It's not dissimilar from "rolling out of omoplata" in ground grappling context, where it's also an escape. In both cases the escapee remains in an inferior position, he's not immediately set to turn the tables.
In Aikido philosophy context this means let him go. Of course my personal philosophy would say, maintain control and only let go when the attacker calmed down.