Erebus, the Stalemate Master

This isn't a typical nerf post because I'm not going to gripe about how a Demigod is overall overpowered, but instead how the mechanics of a few moves can ruin a match.  Earlier this afternoon I got into a 2v2 Fortress match on Crucible, via Pantheon mode.  It was a rather amusing face off because it was two Sedna versus two Erebus.  We couldn't kill Erebus--but that's not what I'm complaining about at all (because he couldn't kill us either).  Hell, at one point we had like a 10 minute duke out in the center with nobody returning for mana.

We were more or less dominating this map, despite only having a single kill at that point (and them none on us), we were just wiser about allocating our resources.  The final fortress was being pursued, and we were at the final choke point with four towers in front of it, giants and everything.  The problem is, a giant never touched those towers, despite the fact that our opposition didn't even have priests.

How?  Easy.  One Erebus could Bat Swarm across the gap from their base, use Mist and all momentum would come to a halt.  Once nearly out of mana, he would Bat Swarm back across the gap and recover his mana (with his ally filling in when needed).  This combination of abilities brought us to a stalemate for an hour.  It's ridiculous that just by misting he can kill the creeps and spawn nightwalkers to occupy the attention of and kill giants.

Because the crystal was a 6 meter walk and a Bat Swarm away from this spot, there was no way to progress.  Some 45 minutes later they finally got giants of their own from their piddly revenue, and were able to push back, something which we allowed to happen.  With the two Erebus' getting cocky enough to try and take down our entire lane of towers to get to our fortress, the other Sedna and I could just ignore their remaining tower line to just target the fortress for a win--a damage race they could never win.

If they had never bothered getting giants themselves, or had just remained at that choke point this match would have never ended.  Something here needs to change, whether it be the Crucible map itself, Bat Swarm's ability to hop such wide gaps, or giving Mist a duration so it can't hold an entire army up indefinitely.

Before you ask why we couldn't just try taking out the towers ourselves, this was an impossible feat.  Two fully upgraded arrow and two normal towers can not be broken with an Erebus biting and stunning you (the other was still busy holding the entire army back with mist).  I had even tried getting a Cloak of Flames and that first AoE artifact ring to try and get some burst to take down the arrow towers, but they would regen too quickly and send us packing too quickly with their high damage.

Just my two cents on an aggravating match up on a broken map.