[Exploit]Possible guardian invulnerability exploit

[Someguy]

I was playing a 2v2 last night and I noticed during the final battle over at my base it took an awful long time to kill some guardians.

Check out the recording in this thread (http://forums.relicnews.com/showthread.php?p=592523#post592523)

Just fast forward to the final battle at my base and pay attention to the right-most group of slugga boys attacking three guardians. Pay attention to the guardians health.

I know it isn't just me so would anyone have an idea on what is going on?

[Zylon]

next time be so kind to tell how many minutes into the game this is happening... its about 19 mins into the game

and yes that looks like a bug to me in fact ive had the same thing happen to me but then with howling banshees,
but in my replay my ork sluggas and the eldar banshees looked a bit motionless yet showing idle animations

very strange