Toilets, Sinks, Showers, Tubs and Disposals - NEED HELP w/ CAST IRON TOILET FLANGE

Ok guys this may be a new one for ya. A buddy called me up begging for help saying that a plumber just left his house after connecting a new toilet to the cast iron under the floor work that the same plumber had installed a week or so ago. It seems that the old cast iron stuff cracked and leaked and made a mess all the way down to the kitchen ceiling which is under this bathroom. the plumber roughed in the 4'' Cast iron, then a sub floor was put down .. then of course to make matters worse the finish 12x12 Ceramic $5 a tile floor was put down. The plumber came back and apparently put a cast iron toilet flange onto the cast iron pipe BUT (and here it comes) he roughed it in too close to a wall... so now my buddy has a toilet that flushes but he can't put the toilet tank cover on the tank.. and when I took a quick look at it the tank isn't squarely bolted down to the bowl either because it's too damn close to the side wall to do so... The back of the tank is fine.. but the wall to the left of the toilet gets in the way of putting the tank onto the bowl squarely and the toilet tank lid won't go on at all. I know I can fix this with an offset toilet flange. BUT I have no idea of how to get the old flange off (which i assume is flush with the ceramic floor) and how to put a new cast iron offset flange on .... ANYONE ABLE TO HELP?

First off, Would you please take a few measurements for me and maybe post a few pictures.
I would like a measurement from the back wall to the center of the flange, and the measurements from the center of the flange to the wall on to both sides of the toilet.

I would like to know exactly what we are dealing with.

Secondly, why did the plumber use cast iron? was it by request, or is it plumbing code in your area?

Third, Do you know if he used NO-HUB cast iron with metal band clamps?

Just want to say thanks for your interest...sorry I haven't gotten back on here sooner... But to make a long story short the problem is fixed. The plumber that originally did the work came back for payment... yeah believe it or not -- he came back to get paid for a job that was not done correctly. My buddy refused to pay him and since there was no contract or anything for that matter in writing -- he told the plumber to take him to court if he wanted payment. Of course the plumber was not going to do this and my buddy knew it... He did offer the plumber an "out" to get paid. His offer ---> fix your "F" up. Well, the plumber -- despite originally saying it wasn't his fault -- finally owned up to the fact that he could have measured better. YEAH NO KIDDIN A-hole !!! He took up the floor again, and re-ran the Ideal (never heard of this but It supposidly is a cast iron thing under the floor that takes the waste from the toilet, tub and vanity and is connected to the waste stack) -- made the lines to the vanity and tub shorter and then was able to move the waste connection to the toilet to the right about 1.5 inches. After all this work it allowed the toilet tank to sit flush against the bowl and allowed the tank lid to be placed on the tank. It looks okay now, but the whole experience took about a week... My buddy ended up working out a deal with the plumber.. where the plumber paid for the new sub-floor patch, new wonder board patch and new ceramic tile. They agreed on $200 off the original price quoted verbally.

I questioned the same thing when I saw the work that the plumber had done.. why cast iron?? I've been told that all Ideal Bends come in ONLY Cast iron.. but I've been told that with the proper Sched 40 PVC and fittings you can make your own Ideal --- makes sense to me... but for what ever reason the guy used Cast Iron. Maybe he thought it would be less work initially... who knows..

This should be good. What did the plumber tell you when you noticed the tank leaning and the lid would not go on? What did he say?

Did he say his plan was on using a less wide/low flush toilet, but you wanted to use some other style or an exsiting one? And/or did he think the right side would have been too close to a vanity? Was this a new rough-in from scratch without there ever been a toilet in that exact location before?