Any diagnosis at this point is difficult. As jt mentioned, the chain can't "jump time" on the timing device due to a steel pin. On the crank, a boss is cast into the timing cover. Although it is more likely that a part would get into the bottom of the chain and cross the crank sprocket, it would have to bend/break that boss to allow the chain to jump a tooth, which I would expect to cause a leak in the bottom of your timing case behind the balancer (I have a spare cover if you find yourself looking for a used one).

Further, as you might be able to see in the photo attached, the pistons actually protrude out of their bores at TDC, with a flat head that makes for some pretty tight clearance, I can't imagine that more than a tooth would be healthy in cam-to-crank timing error.

The best advice I've read above is to check the cam to crank timing, see if there is a disparity. One tooth will show up quickly. If it's a tooth off, the next step will be to pull the radiator so that the harmonic balancer can be pulled. I believe that you can remove the front crank seal and have enough clearance then to check the timing case boss (it will be behind the oil-pump chain) and check for damage to the timing case.

Best of luck, sorry to hear about the mishap. On the good side, you probably were considering repairing that pesky front seal leak anyway, and if the damage was to your oil pump chain, ... running the engine would have destroyed the engine.

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- Jeff