Well, that's another game ruined

[Imp]

Remove that & you remove a lot of oh heck moments, & was it totally unrealistic?

Engaging what infantry, was the commander aware tanks are coming from that area. Had they been seen before the smoke? Moving objects are a lot easier to see in smoke than stationary ones so its just a case of could he traverse the turret quick enough to get off the shot first. How far did he move last turn, guessing not far so he was being cautious to.
If you wanted a dead cert you should have buttoned the tank to retreat status or been gamey & used all its shots. Even then there is a very remote chance it may recover if fired on again.
No need to go that far judging when a unit is suppressed enough to get away with a move like that is part of the game & sometimes you get it wrong.
He wasn't suppressed enough & was most likely slow moving but is now wide open to his original attackers who I assume are infantry & can put an RPG up his tailpipe.
If no one is capable of doing so then current threat has been neutralised so hes taking on the next one.

Its what makes this game, expect the unexpected its war anything can happen & you need to adapt when it all goes wrong or indeed very right & its time to exploit it.

Get it right vs a fast moving suppressed vehicle & you can run an armoured car up to it at speed for a near point blank shot to the rear without a reaction or with a turret turn at most.