Actually, if there's a dispute, this point in the current Rules states that you are allowed to do so, because:
5.10. "Wings of the Angel" can be used without any restrictions, as long as it doesn't contradict section 5.13.
This has already been discussed extensively, I repeat:
The new version of the Rules will explicitly state that it is permissible to enter other territories without breaking the Guard, (in particular, on the 2sm4d(3) template).
The point about the wings is described very subtly. Or perhaps it should be point 5.12. It's already clear that anyone who has recently played according to the current rules will always understand that it is never permissible to enter without breaking the Guard. They should have added something about the wings there. Again, according to 5.10, it only says that it is permissible to enter with wings, but where did the damage and flight come from then?...
And in the new version, will it even be possible not to attack the Guard? (if it can simply be bypassed)